## Sunday, 28 May 2017

1 . A.   33.33 % B.   35 % C.   31.35 % D.   35.83 %
2 . What is the difference between Pineapple and Grapes produced in 2010 together and Orange and Mango together produced in 2008 ?

 A.   82 tonnes B.   78 tonnes C.   69 tonnes D.   71 tonnes
3 . There are two bags, one of which contains 5 red, 7 white balls and other contains 3 red and 12 white balls. One ball is to be drawn randomly from one or other of the bags, find the probability that drawn ball will be off red colour ?

 A.   $27\over120$ B.   $17\over120$ C.   $37\over120$ D.   none of these
4 . A bag contains 5 yellow, 4 black balls and two balls are drawn at random. Find the probability that they are of the same colour ?

 A.   $5\over9$ B.   $4\over19$ C.   $5\over19$ D.   $4\over9$
5 . The radii of the bases of a cylinder and a cone are in the ratio of 4 : 5, and their heights are in the ratio of 3 : 2. Find the ratio of their volumes ?

 A.   72 : 25 B.   25 : 72 C.   62 : 25 D.   25 : 62
6 . A.   90 B.   95 C.   98 D.   99
7 . What is the total marks obtained by B in all subjects together ?

 A.   568 B.   585 C.   581 D.   600
8 . The marks obtained by student C in Chemistry is what per cent of the total marks obtained by C in Maths ?

 A.   104% B.   110% C.   115% D.   None of these
9 . . What is the ratio of marks obtained by students B and C in Math's together to marks obtained by D and E together in History ?

 A.   14:29 B.   29:14 C.   39:14 D.   14:39
10 . The marks obtained by student D in Science is approximately what percent of the mark obtained by the students B in Maths ?

 A.   178% B.   278% C.   268% D.   270%

1 .
 Answer : Option A Explanation : ∴ (400 – 300) = 100 ∴ $100\over300$x100=33.33%
2 .
 Answer : Option C Explanation : 300 × 45 % – 200 × 33% = 135 – 66 = 69 tonnes
3 .
 Answer : Option C Explanation : 4 .
 Answer : Option D Explanation : 5 .
 Answer : Option A Explanation : 6 .
 Answer : Option B Explanation : =(108x75%+82x100%+60x150%+88x200%+80x175%)=108x$3\over4$+82+60x$3\over2$+88x2+80x$7\over4$= 81 + 82 + 90 + 176 + 140=$569\over6$=94.83 ≈ 95%
7 .
 Answer : Option C Explanation : 44x$3\over4$+72x$3\over4$+58+80x$3\over2$+95x200%+72$7\over4$= 33 + 54 + 58 + 120 + 190 + 126 = 581
8 .
 Answer : Option D Explanation : $72\over51$x100=141.17%
9 .
 Answer : Option A Explanation : (72+68)x$3\over4$:(85+60)x$3\over2$=$140\over2$:145= 70 : 145 = 14 : 29
10 .
 Answer : Option B Explanation : 