Question
In how many years , Rs. 150 will produce the same interest @ 8% as Rs. 800 produce in 3 years @ `4 1/2`% ?
Answer: Option C
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P = Rs. 800, R = `4 1/2`% = `9/2`% T = 3 years. Then
S.I. = Rs. `(800 xx 9/2 xx 3/100)` = Rs. 108.
New, P = Rs. 150, S.I. = Rs. 108, R = 8%
`:.` Time = `((100 xx 108)/(150 xx 8))` years = 9 years .
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