IBPS SO Prelims Exam Model Paper 7

Formula used∶
SI =

(P×T×R)

100

Calculations∶
Given that

1

4

of 1200 is invested at 5% for three years,
SI =

300×3×5

100

---(1)
Let the remaining amount is invested at x % per annum,
SI =

900×3×x

100

---(2)
According to the question,
The Sum of simple interests is Rs. 261
⇒ (1) + (2) = 261
⇒

300×3×5

100

+

900×3×x

100

= 261
⇒ x = 8%
Hence the rate at which the remaining amount is invested is 8%.