a2zinterviews

11.	A boy was asked to multiply a number by 25. He instead multiplied the next number by 52 and got the answers 324 more than the correct answer. The number to be multiplied was
	A.  10
	B.  12
	C.  15
	D.  25

Solution

Let the number be x. Then, 52 x - 25 x = 324 ‹=› 27 x = 324 x= 12.

12.	On simplification 3034 - (1002 ÷20.04) is equal to
	A.  2543
	B.  2984
	C.  2993
	D.  3029

Solution

Given exp. = 3034 - ( 1002 / 2004 ×100) = 3034 - 50 =2984.

13.	3640 ÷14 ×16 + 340 = ?
	A.  0.70
	B.  3525
	C.  4500
	D.  9600

Solution

Given exp. = 260 x 16 + 340 = 4160 + 340 =4500.

14.	Along a yard 225 metres long, 26 trees are palnted at equal distances, one tree being at each end of the yard. What is the distance between two consecutive trees?
	A.  9 metres
	B.  12 metres
	C.  15 metres
	D.  18 metres

Solution

26 trees have 25 gaps between them. Required distance = (225 / 25)m = 9 m.