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DRDO Multi tasking staff Model paper 2
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© examsnet.com
Question : 90
Total: 101
At some rate of simple interest, X lent Rs. 9000 to Y for 3 year and Rs. 1600 to Z for 5 year and received Rs. 1050 as interest from both of them together. The rate of interest per annum?
3%
7%
8.5%
12%
Validate
Solution:
Simple Interest (S.I.) = Principal Amount × Rate × Time/100
Let the Rate = r%
∴ S.I. for Y = (9000 × r × 3)/100 = Rs. 270 r
S.I. for Z = (1600 × r × 5)/100 = Rs. 80 r
Total S.I. = Rs. 350 r = Rs. 1050 (Given)
⇒ r = 3%
© examsnet.com
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