1)

A sum of money becomes 4140 of itself in 14 years at certain rate of simple interest. The rate of interest per annum is


A) 10%

B) 1%

C) 2.5%

D) 5%

E) 12%

Answer:

Option A

Explanation:

Let  P=1, SI =41401 =140

Rate % =(100SI)P×N

=(140×1001×14) = 10%