## Saturday, 13 May 2017

1 . Directions (1–4): What approximate value should come in place of the question mark (?) in the following? (You are not expected to calculate the exact value).
8787 ÷ 343 × $\sqrt50$ = ?

 A.   250 B.   140 C.   180 D.   100
2 . ³$\sqrt54821$ × (303 ÷ 8) = $(?)^2$

 A.   48 B.   38 C.   28 D.   18
3 . $5\over8$ of 4011.33 + $7\over10$ of 3411.22 = ?

 A.   4810 B.   4980 C.   4890 D.   4930
4 . 23% of 6783 + 57% of 8431 = ?

 A.   6460 B.   6420 C.   6320 D.   6360
5 . Ratio of cost price and marked price of an article is 3:5. Ratio of profit percentage and discount percentage is 5:3. Find discount percentage?

 A.   10% B.   $10\over3$% C.   20% D.   $20\over3$
6 . A can do a piece of work in the days taken by B and C together A and B can do piece of work in 10 days and C can do in 50 days. Find in how many days B alone can complete the work?

 A.   25 B.   35 C.   40 D.   10
7 . 10 year ago A was 3 times of the age of B and hence, after 10 years, he will be twice the age of B. Find the respective ratio of their present age.

 A.   7 : 3 B.   3 : 7 C.   2 : 1 D.   1 : 2
8 . A boat goes in a running water flowing at the rate of 1.5 kmph. In a given time, boat goes twice the distance in downstream than upstream. Find speed of the boat in still water.

 A.   4.5 B.   6 C.   3 D.   Can not be determined
9 . If a train is going at the rate of 40 kmph, it is late by 11 min. If it is going at the rate of 50 kmph, it is late by 5 mins to reach at a destination. Find actual time to complete the journey.

 A.   30 min. B.   24 min. C.   19 min. D.   17 min.
10 . There is a certain amount from which A takes 25%, then B takes 50% of remaining amount, then C takes 75% of the remaining amount. Now if the amount left is 5760, then what is the actual sum?

 A.   ₨ 58220 B.   ₨ 59680 C.   ₨ 60600 D.   ₨ 61440
1 .
 Answer : Option C Explanation :
2 .
 Answer : Option B Explanation :
3 .
 Answer : Option C Explanation : ? = 4011.33 × $5\over8$ +3411.22 × $7\over10$= 501.41 × 5 + 341.12 × 7 = 2507 + 2387= 4894 = 4890
4 .
 Answer : Option D Explanation : ? = 6783 × $23\over100$ + 8431 × $57\over100$ = ?= $156009\over100$ + $480567\over100$ = $636576\over100$= 6365.76= 6360
5 .
 Answer : Option C Explanation : C.P. : M.R.P3x: 5xP% : D%5y: 3yS.P. = S.P.3x + $(3x × 5y)\over100$ = 5x+ $(5x × 3y)\over100$ y = $20\over3$D% = 3y= 20%
6 .
 Answer : Option A Explanation :
7 .
 Answer : Option A Explanation :
8 .
 Answer : Option A Explanation :
9 .
 Answer : Option C Explanation : x = Actual time in minutes.S × T = S × T40 × $(x+11)\over60$ = 50 × $(x+5)\over60$x = 19 minutes.
10 .
 Answer : Option D Explanation :