1.

At what rate of interest will a sum of money doubles itself in 20 years?

Answer»

ANSWER:

Given:

Time = 20 years

Let p = X

S.I. = 2X

By formula, we KNOW:

S.I. = PRT/100

=> 2x = x × 20 × R/100

=> R = 10%

Rate of interest = 10%

Hope it Helps!! :)



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