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At what rate per annum will ₹100 give ₹100 as interest in some years? If the interest equals the principal in 5 years, the rate is:

Class 7Simple InterestComparing Quantities

A20%
B10%
C25%
D5%

Step-by-Step Solution

S.I. = ₹100 on

P

= ₹100 in 5 years.

R

= (S.I. × 100)/

(P \times T) = (100 \times 100) / (100 \times 5) = 20

%.

Answer: A) 20%

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