Bank PO Quantitative aptitude Quiz 37

1 . 3567.43 + 2788.17 - ? = 1379.56 A.   4796.04 B.   4976.04 C.   4769.04 D.   4677.04 2 . $18 \times 17 - 299 \over 120 \div 240$ = ? A.   16 B.   12 C.   14 D.   18 3 . A and B together can finish a work in 9 days. A alone can finish the same work in 12 days. In how many days will B alone finish the work? A.   24 days B.   28 days C.   32 days D.   36 days 4 . The ratio of the number of boys to that of girls in a school is 9 : 7. If the number of boys increases by 40%, and that of girls by 20%, what will be the new ratio of boys to girls? A.   3 : 2 B.   2 : 3 C.   4 : 3 D.   3 : 4 5 . Directions(6-9) : What approximate value will come in place of question mark (?) in the following questions? $Q.$ 32.05% of 259.99 = ? A.   92 B.   88 C.   78 D.   83 6 . $1\over 8$ of $2\over 3$ of $3\over 5$ of 1715 = ? A.   80 B.   85 C.   90 D.   95 7 . 25.05 $\times$ 123.95 + 388.999 $\times$ 15.001 = ? A.   900 B.   8950 C.   8935 D.   8975 8 . 561 $\div$ 35.05 $\times$ 19.99 = ? A.   320 B.   330 C.   315 D.   325 9 . $(15.01)^2$ $\times$ $\sqrt {730}$ = ? A.   6125 B.   6225 C.   6200 D.   6075 10 . Directions(10) : In each of these questions, a number series is given. In each series, only one number is wrong. Find out the wrong number. $Q.$ $3601\,\,\,\, 3602 \,\,\,\,1803 \,\,\,\,604 \,\,\,\,154 \,\,\,\,36 \,\,\,\,12$ A.   3602 B.   1803 C.   604 D.   154

Answers & Solutions   1 .     Answer : Option B Explanation : ? = 3567.43 + 2788.17 - 1379.56 = 6355.6 - 1379.56 = 4976.04 2 .     Answer : Option C Explanation : ? = $18 \times 17 - 299 \over 120 \div 240$ = $306 - 299 \over 120 \div 240$ = $7 \times 2 \over 1$ = 14 3 .     Answer : Option D Explanation : B's one day's work = $1 \over 9$ - $1\over 12$ = $4 - 3 \over 36$ = $1\over 36$ 4 .     Answer : Option A Explanation : New ratio = 9 x $140 \over 100$ : 7 x $120 \over 100$ = 1260 : 840 = 3 : 2 5 .     Answer : Option D Explanation : ? = $32\over 100$ x 260 = 83.2 $\cong$ 83 6 .     Answer : Option B Explanation : ? = $ 1\over 8$ x $2\over 3$ x $3\over 5$ x 1715 = 85.75 $\cong$ 85 7 .     Answer : Option C Explanation : 25 $\times$ 124 + 389 $\times$ 15 = 3100 + 5835 = 8935 8 .     Answer : Option A Explanation : ? = $561 \over 35$ x 20 = 320.5 $\cong$ 320 9 .     Answer : Option D Explanation : ? = $(15)^2$ x $\sqrt{730}$ = 225 x 27 = 6075 10 .     Answer : Option D Explanation :