Question

If the simple intrest for 3 years on rs 10,500 is rs 1890 then the rate of interest

Answer 1

PRT/100 = I
10500 x R x 3 / 100 = 1890
10500 x 3 x R = 189000
R x 10500 = 189000/3 = 63000
R = 63000/10500
= 630/105 = 6

Answer 2

The rate of interest is 6%.

Step-by-step explanation:

Given, simple interest = S.I = Rs. 1890

Time = T = 3 years

Principal = P = Rs. 10500

Rate of interest = R

By using the formula,

S.I = $\frac{PRT}{100}$

=> 1890 = $\frac{10500\times R\times 3}{100}$

=> 1890 = 315R

=> R = $\frac{1890}{315}$

=> R = 6%

Hence, the rate of interest is 6%.