1.

Calculate the simple interest rate per annum at which sum will get double in 4 years?1). 202). 253). 504). 35.5

Answer»

LET the principal be x, then amount will be 2x after 4 years

Simple Interest (SI) = PRT/100, where P = Principal, R = Rate of Interest and T = Time

Amount = P + SI

⇒ 2x = x + (xRT/100)

⇒ x = xRT/100

⇒ R = 100/4

∴ R = 25%



Discussion

No Comment Found