SSC CHSL 15 Nov 2015 Shift 1 Paper

Question : 129 of 199

Marks: +1, -0

The sum of two numbers is 75 and their difference is 25. The product of the two numbers is:

Solution:

Let the numbers be

x

and

y

⇒ Sum =

x+y=74

-------(i)
and difference =

x-y=25

--------(ii)
Adding both equations, we get :

2x = 75 + 25 = 100

⇒

x = 100 /2 = 50

Substituting it in equation (i), ⇒

y = 75 − 50 = 25

∴ Product =

50 × 25 = 1250

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