# Find the amount to be paid at the end of 3 years in each case:

(a) Principal = Rs 1,200 at 12% p.a.

(b) Principal = Rs 7,500 at 5% p.a.

**Solution:**

(a)Principal = Rs 1,200 at 12% p.a.

Simple Interest = [Principal × Rate of interest (p.a.) × Time( in years)] /100

= (1200 × 12 × 3) / 100

= Rs 432

Amount = Principal + Interest

= Rs 1200 + Rs 432

= Rs 1632

So, the amount to be paid after 3 years will be Rs. 1632

(b)Principal = Rs 7,500 at 5% p.a.

Simple Interest = [Principal × Rate of interest (p.a.) × Time( in years)] / 100

= [7500 × 5 × 3] /100

= 1125

Amount = Principal + Interest

= 7500 +1125

= 8625

So, the amount to be paid after 3 years will be Rs.8625

**Video Solution:**

## Find the amount to be paid at the end of 3 years in each case: (a) Principal = Rs 1,200 at 12% p.a. (b) Principal = Rs 7,500 at 5% p.a.

### Class 7 Maths NCERT Solutions - Chapter 8 Exercise 8.3 Question 9

Find the amount to be paid at the end of 3 years in each case: (a) Principal = Rs 1,200 at 12% p.a. (b) Principal = Rs 7,500 at 5% p.a.

Amount to be paid at the end of three years will be, (i) Rs1632, (ii) Rs 8625