Question

A sum of Rs. 25,000 becomes Rs.30,000 at the end of
4 years when calculated at simple interest . Find the
rate of interest?​

Answer 1

Step-by-step explanation:

Simple Interest = Rs 5000

Time period = 4 years

Principal = Rs 25, 000

S.I. = PTR / 100

Rate (R) = S.T. × 100 / PT

Rate = 5000 × 100 / 25,000 × 4

Rate = 5%

Answer 2

Answer:

Rate of interest  = 5%

Step-by-step explanation:

Given,

At simple interest in 4 years, the sum of 25,000  becomes Rs.30,000

To find,

Rate of interest

Recall the formula

Simple interest = S.I = $\frac{PTR}{100}$ ---------------------(1)

, where P is the principal, T is the time period  and R is the rate of interest

Amount = P + S.I --------------------------(2)

Solution:

Since it is given that that, at simple interest in 4 years, the sum Rs. 25,000 becomes Rs.30,000

We have

P = 25000

T = 4 years

A = 30,000

From equation (1)

S.I = $\frac{PTR}{100}$ = $\frac{25000X 4 X R}{100}$

S .I = 1000R

From equation (2)

Amount = P + S.I

30,000 = 25,000+1000R

1000R = 30,000 - 25,000

=5000

R = $\frac{5000}{1000} = 5$

∴Rate of interest  = 5%

#SPJ2