RRB Group D Model Paper 6 with solutions

Question : 44 of 99

Marks: +1, -0

In how many years will ₹ 1,800 amount to ₹ 2,178 at 10% per annum when compounded annually?

Solution:

(4) 2178 = 1800

(1+10/ 100)^n

⇒

2178/1800

(1+10/ 100)^n

⇒ 1.21 =

1.1^n

⇒

(1.1)^2 = (1.1)^n

⇒ n = 2

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