SSC CHSL 6 Dec 2015 Shift 2 Paper

Question : 132 of 200

Marks: +1, -0

The income of a company increase 20% per annum. If its income ₹26,64,000 in the year 2012, then its income in the year 2010 was:

Solution:

Let income in year 2010 = Rs. x
Increase % every year = 20%
Thus, income in 2012 =

x(1 + 20/100 ) ^2= 26, 64, 000

⇒

x( 6 /5 ) ^2 =26, 64, 000

⇒

x = 26, 64, 000 ×25/ 36

⇒

x = 74, 000 × 25 = 18, 50, 000

∴ Income in 2010 was Rs. 18,50,000

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