RRB Group D Model Paper 3 with solutions

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Question : 67 of 100

Marks: +1, -0

In what time will ₹ 625 become ₹ 676 at 8% p.a. interest compounded half-yearly?

2 years
3 years
1 year
6 years

Solution:

(3) A = P

(1+R/100)^t

676 = 625

(1+8/{2×100})^{2×t}

⇒

676/625= (208/200)^{2t}

⇒

(26/25)^2= (26/25)^{2t}

⇒ 2t = 2
⇒ t = 1 year

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