{"common":{"save":0,"post_id":"816","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1851","post_id":"816","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["1"],["16"]]],"list":[{"point":10,"width":50,"ques":"Cho $A = \\dfrac{\\left( 9\\dfrac{3}{4} : 5,2 + 3,4 . 2\\dfrac{7}{34} \\right) : 1\\dfrac{9}{16}}{0,31 . 8\\dfrac{2}{5} - 5,61 : 27\\dfrac{1}{2}}$ <br\/><br\/> 2,5% c\u1ee7a A l\u00e0: <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":"R\u00fat g\u1ecdn A r\u1ed3i t\u00ecm 2,5% c\u1ee7a A","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Vi\u1ebft c\u00e1c h\u1ed7n s\u1ed1 v\u00e0 s\u1ed1 th\u1eadp ph\u00e2n d\u01b0\u1edbi d\u1ea1ng ph\u00e2n s\u1ed1 <br\/> <b> B\u01b0\u1edbc 2: <\/b> R\u00fat g\u1ecdn A <br\/> <b> B\u01b0\u1edbc 3: <\/b> T\u00ecm 2,5% c\u1ee7a A <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $ \\begin{align*} & A = \\dfrac{\\left( 9\\dfrac{3}{4} : 5,2 + 3,4 . 2\\dfrac{7}{34} \\right) : 1\\dfrac{9}{16}}{0,31 . 8\\dfrac{2}{5} - 5,61 : 27\\dfrac{1}{2}} \\\\ & = \\dfrac{ \\left( \\dfrac{39}{4} : \\dfrac{52}{10} + \\dfrac{34}{10} . \\dfrac{75}{34} \\right) : \\dfrac{25}{16}}{\\dfrac{31}{100} . \\dfrac{42}{5} - \\dfrac{561}{100} : \\dfrac{55}{2}} \\\\ &= \\dfrac{ \\left( \\dfrac{39}{4} . \\dfrac{5}{26} + \\dfrac{15}{2} \\right) . \\dfrac{16}{25}}{\\dfrac{651}{250} - \\dfrac{561}{100} . \\dfrac{2}{55}} \\\\ &= \\dfrac{\\left( \\dfrac{15}{8} + \\dfrac{15}{2} \\right) . \\dfrac{16}{25}}{ \\dfrac{651}{250} - \\dfrac{51}{250}} \\\\ &= \\dfrac{ \\dfrac{75}{8} . \\dfrac{16}{25} }{\\dfrac{12}{5}} \\\\ &= \\dfrac{6}{\\dfrac{12}{5}} = \\dfrac{5}{2} \\end{align*} $ <br\/> $2,5 \\% . A = \\dfrac{25}{1000} . \\dfrac{5}{2} = \\dfrac{1}{16}$ <br\/> <span class='basic_green'> <i> Nh\u1eadn x\u00e9t: Mu\u1ed1n t\u00ecm gi\u00e1 tr\u1ecb ph\u00e2n s\u1ed1 c\u1ee7a m\u1ed9t ph\u00e2n s\u1ed1 A, tr\u01b0\u1edbc ti\u00ean ta r\u00fat g\u1ecdn A r\u1ed3i m\u1edbi t\u00ecm gi\u00e1 ph\u00e2n s\u1ed1 c\u1ee7a A <\/i> <\/span> "}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:55"},{"id":"1852","post_id":"816","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["69"],["100"]]],"list":[{"point":10,"width":50,"ques":" Cho $M = \\dfrac{3 : \\dfrac{2}{5} - 0,09 : \\left( 0,15 : 2\\dfrac{1}{2} \\right)}{0,32 . 6 + 0,03 - (5,3 - 3,88) + 0,67}$ <br\/><br\/> $N = \\dfrac{(2,1 - 1,965) : (1,2 . 0,045)}{0,00325 : 0,013} - \\dfrac{1 : 0,25}{1,6 . 0,625}$ <br\/> <br\/> $12\\%$ c\u1ee7a $\\dfrac{3}{4} . M + \\dfrac{1}{3} . N$ l\u00e0: <div class=\"frac123\"><div class=\"ts\">_input_<\/div><div class=\"ms\">_input_<\/div><\/div>","hint":" R\u00fat g\u1ecdn M, N r\u1ed3i t\u00ednh","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> Kh\u00e9o l\u00e9o chuy\u1ec3n gi\u1eefa ph\u00e2n s\u1ed1, h\u1ed7n s\u1ed1 v\u1edbi s\u1ed1 th\u1eadp ph\u00e2n \u0111\u1ec3 r\u00fat g\u1ecdn M, N <br\/> <b> B\u01b0\u1edbc 2: <\/b>T\u00ednh $\\dfrac{3}{4}. M + \\dfrac{1}{3} . N$ <br\/> <b> B\u01b0\u1edbc 3: <\/b> T\u00ednh 12% c\u1ee7a $\\dfrac{3}{4} . M + \\dfrac{1}{3} . N$ <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> $ \\begin{align*} &M = \\dfrac{3 : \\dfrac{2}{5} - 0,09 : \\left( 0,15 : 2\\dfrac{1}{2} \\right)}{0,32 . 6 + 0,03 - (5,3 - 3,88) + 0,67} \\\\ &= \\dfrac{3 . \\dfrac{5}{2} - \\dfrac{9}{100} : \\left( \\dfrac{15}{100} . \\dfrac{2}{5} \\right)}{1,92 + 0,03 - 1,42 + 0,67} \\\\ &= \\dfrac{\\dfrac{15}{2} - \\dfrac{9}{100} : \\dfrac{3}{50}}{1,92 - 1,42 + 0,03 + 0,67} \\\\ &= \\dfrac{\\dfrac{15}{2} - \\dfrac{3}{2}}{0,5 + 0,7} \\\\ &= \\dfrac{6}{1,2} = \\dfrac{6}{\\dfrac{12}{10}} = 5 \\end{align*} $ <br\/> $ \\begin{align*} &N = \\dfrac{(2,1 - 1,965) : (1,2 . 0,045)}{0,00325 : 0,013} - \\dfrac{1 : 0,25}{1,6 . 0,625} \\\\ &= \\dfrac{0,135 : 0,054 }{0,25} - \\dfrac{4}{1} \\\\ &= \\dfrac{2,5}{0,25} - 4 \\\\ &= 10 - 4 = 6 \\end{align*} $ <br\/> $\\dfrac{3}{4} . M + \\dfrac{1}{3} . N = \\dfrac{3}{4} . 5 + \\dfrac{1}{3} . 6 = \\dfrac{15}{4} + 2 = \\dfrac{23}{4} = 5,75$ <br\/> 12% c\u1ee7a $\\dfrac{3}{4} . M + \\dfrac{1}{3} . N$ l\u00e0: 12% . 5,75 = 0,69 = $\\dfrac{69}{100}$ "}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:55"},{"id":"1853","post_id":"816","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n \u0111\u00e1p \u00e1n \u0111\u00fang v\u00e0o \u00f4 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["105101005","105101005,01"]]],"list":[{"point":10,"width":100,"type_input":"","ques":"M\u1ed9t ng\u01b0\u1eddi g\u1eedi ti\u1ebft ki\u1ec7m 100 tri\u1ec7u \u0111\u1ed3ng v\u00e0o ng\u00e2n h\u00e0ng theo th\u1ec3 th\u1ee9c c\u00f3 k\u00ec h\u1ea1n 1 n\u0103m v\u1edbi l\u00e3i su\u1ea5t 1% m\u1ed9t n\u0103m. H\u1ecfi sau 5 n\u0103m ng\u01b0\u1eddi \u0111\u00f3 m\u1edbi r\u00fat ti\u1ec1n k\u1ec3 t\u1eeb ng\u00e0y g\u1eedi th\u00ec s\u1ed1 ti\u1ec1n c\u1ea3 v\u1ed1n l\u1eabn l\u00e3i l\u00e0 bao nhi\u00eau? <br\/>\u0110\u00e1p s\u1ed1: _input_ \u0111\u1ed3ng","hint":"sau m\u1ed7i n\u0103m th\u00ec s\u1ed1 ti\u1ec1n l\u00e3i l\u1ea1i \u0111\u01b0\u1ee3c c\u1ed9ng d\u1ed3n v\u00e0o ti\u1ec1n g\u1ed1c","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> <b> B\u01b0\u1edbc 1: <\/b> T\u00ednh s\u1ed1 c\u1ea3 g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 1 n\u0103m <br\/> <b> B\u01b0\u1edbc 2: <\/b> T\u00ednh c\u1ea3 g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 2 n\u0103m <br\/> <b> B\u01b0\u1edbc 3: <\/b> T\u00ednh s\u1ed1 ti\u1ec1n g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 3 n\u0103m <br\/> <b> B\u01b0\u1edbc 4: <\/b> T\u00ednh s\u1ed1 ti\u1ec1n g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 4 n\u0103m <br\/> <b> B\u01b0\u1edbc 5: <\/b> T\u00ednh s\u1ed1 ti\u1ec1n g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 5 n\u0103m <\/span> <br\/><br\/> <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/> S\u1ed1 ti\u1ec1n g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 1 n\u0103m l\u00e0: <br\/> 100 000 000 + 1% . 100 000 000 = 101 000 000 (\u0111\u1ed3ng) <br\/> S\u1ed1 ti\u1ec1n g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 2 n\u0103m: <br\/> 101 000 000 + 1% . 101 000 000 = 102 010 000 (\u0111\u1ed3ng) <br\/> S\u1ed1 ti\u1ec1n g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 3 n\u0103m l\u00e0: <br\/> 102 010 000 + 1% . 102 010 000 = 103 030 100 (\u0111\u1ed3ng) <br\/> S\u1ed1 ti\u1ec1n g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 4 n\u0103m l\u00e0: <br\/> 103 030 100 + 1% . 103 030 100 = 104 060 401 (\u0111\u1ed3ng) <br\/> S\u1ed1 ti\u1ec1n c\u1ea3 g\u1ed1c v\u00e0 l\u00e3i ng\u01b0\u1eddi \u0111\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c sau 5 n\u0103m l\u00e0: <br\/> 104 060 401 + 1% . 104 060 401 = 105 101 005,01 (\u0111\u1ed3ng) <br\/> \u0110\u00e1p s\u1ed1: 105 101 005,01 \u0111\u1ed3ng (c\u00f3 th\u1ec3 l\u00e0m tr\u00f2n s\u1ed1 th\u00e0nh 105 101 005 \u0111\u1ed3ng) <br\/> <span class='basic_pink'> V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u00e0: 105101005 ho\u1eb7c 105101005,01<\/span> <br\/> <span class='basic_green'><i> Nh\u1eadn x\u00e9t: \u1ede b\u00e0i to\u00e1n n\u00e0y h\u1ecdc sinh hay m\u1eafc sai l\u1ea7m l\u00e0 t\u00ednh % c\u1ee7a 1 n\u0103m r\u1ed3i \u0111em nh\u00e2n v\u1edbi 5 \u0111\u1ec3 t\u00ednh s\u1ed1 ti\u1ec1n l\u00e3i c\u1ee7a 5 n\u0103m <\/i> <\/span> "}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:55"}]}