Question

Find the amount and thee compound interest on Rs 10000 in 3 years,if the rates of interest for the successive years are 10%,15% and 20% respectively

Answer 1

Step-by-step explanation:

Principal (P) = ₹ 10,000

Time (t) = 3 Years

Rate = (R1) = 10%

Rate = (R2) = 15%

Rate = (R3) = 20%

Amount = P (1 + (R1/100)) (1 + (R2/100)) (1 + (R3/100))

= ₹ 10,000 × (1 + (10/100)) (1 + (15/100)) (1 + (20/100))

= ₹10,000 × 11/10 × 23/20 × 6/5 = ₹15,180

C.I. = Amount – Principal

= ₹ 15,180 - ₹10,000 = ₹5180

Answer 2

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→ Principal (P) = Rs 10,000

→ Time (t) = 3 Years

→ Rate = (R1) = 10%

→ Rate = (R2) = 15%

→ Rate = (R3) = 20%

→ Amount = P (1 + (R1/100)) (1 + (R2/100)) (1 + (R3/100))

→ Rs 10,000 × (1 + (10/100)) (1 + (15/100)) (1 + (20/100))

→ Rs 10,000 × 11/10 × 23/20 × 6/5 = ₹15,180

→ C.I. = Amount – Principal

→ Rs 15,180 - Rs 10,000 = Rs 5180 Ans.