Value of X, Ram invested Rs 6400 on compound interest

at the rate of X% and gets an amount of Rs 8464 as interest after 2 yrs.

Quantity II â†’

â†’ âˆš(8464/6400) = (1+ R/100)^n

â†’ 23/20 = 1 + R/100

â†’ R = 15%

There are C.I formulas:

C.I = P([1 + R/100]^n â€“ 1);

A = P (1 + R/100)^n

Why 2nd formula of C.I is used?

at the rate of X% and gets an amount of Rs 8464 as interest after 2 yrs.

Quantity II â†’

**A/P = (1+ R/100)^n**â†’ âˆš(8464/6400) = (1+ R/100)^n

â†’ 23/20 = 1 + R/100

â†’ R = 15%

There are C.I formulas:

C.I = P([1 + R/100]^n â€“ 1);

A = P (1 + R/100)^n

Why 2nd formula of C.I is used?

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