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ML Aggarwal Solutions Class 8 Mathematics Solutions for Simple and Compound Interest Exercise 8.2 in Chapter 8 - Simple and Compound Interest

Question 4 Simple and Compound Interest Exercise 8.2

a man invests Rs 46875 at 4% per annum compound interest for 3 years.

Calculate:

(i) the interest for the first year

(ii) the amount standing to his credit at the end of the second year

(iii) the interest for the third year

Answer:

(i) Principal for the first year = Rs 46875

Rate of interest = 4% per annum

Therefore,

Interest for the first year = Rs (46875 × 4 × 1) / 100

We get,

= Rs 46875 / 25

= Rs 1875

Hence, interest for the first year is Rs 1875

(ii) Amount at the end of first year

= Rs 46875 + Rs 1875

We get,

= Rs 48750

Principal for the second year = Rs 48750

Interest for the second year = Rs (48750 × 4 × 1) / 100

= Rs 48750 / 25

We get,

= Rs 1950

Amount at the end of second year = Rs 48750 + Rs 1950

We get,

= Rs 50700

Hence, the amount at the end of second year is Rs 50700

(iii) Principal for the third year = Rs 50700

Interest for the third year = Rs (50700 × 4 × 1) / 100

We get,

= Rs 507 × 4

= Rs 2028

Hence, the interest in the third year is Rs 2028

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