Problem on number | Aptitude Question and Answer

SBI-PO-main

The sum of two numbers is 25 and their difference is 13. Find their product.

A. 99

B. 177

C. 255

D. 114


Solution

Let the numbers be x and y.

Then, x + y = 25 and x – y = 13.

4xy = (x + y)2 – (x- y)2

= (25)2 – (13)2

= (625 – 169)

= 456

xy = 114.

Answer: D

 

NICL AO

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