1.

The simple interest on a sum of money is 16/25 of the principal. The number of years is equal to the rate of interest per annum. What is the rate (in percentage) of interest per annum?1). 42). 163). 84). 12

Answer»

simple interest on a SUM of money is 16/25 of the principal

let SI = 16 and Principal = 25

⇒ r = t (given)

⇒ SI = (P × r × t)/100

⇒ 16 = (25 × r × r)/100

∴ r = 4/5 × 10 = 8%


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