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

(a) Here, Principal (P) = ₹1,200, Rate (R) = 12% p.a., Time (T) = 3 years
Simple Interest = PXRXT/100 = 1200 X 12 X 3/100
= ₹ 432
Now, Amount = Principal + Simple Interest
= ₹1200 + ₹432
= ₹1,632

(b) Here, Principal (P) = ₹7,500, Rate (R) = 5% p.a., Time (T) = 3 years
Simple Interest = PXRXT/10 = 7500x5x3/100
= .1,125
Now, Amount = Principal + Simple Interest
= ₹7,500 + ₹1,125
= ₹ 8,625

lass 7 Maths Chapter 8 Exercise 8.3

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