Question

A certain sum of money amounts to Rs. 4500 in first year to Rs. 5175 in second year and

to Rs. 6210 in third year. Find the rate of interest for the (i) second year (ii) third year​

Answer 1

Answer:

(i): R=15% for the second year

(ii):R=20% for the third year

Step-by-step explanation:

The principle for the second year = amount for the first year = 4500

Interest obtained in the second year on this sum=rs 5175-4500=rs 675

I=PRT÷100

=675=4500×R×1÷100

R=15% for the second year

for the third year, the principal is rs 5175

Amount = 6210

I=6210-5175=rs 1035

I=PRT÷100

1035=5175×R×1÷100

R= 20% for the third year

Answer 2

Answer:

Step-by-step explanation:

The principal for the second year=amount for first years=rs 4500

Interest obtain in second years on the sum =rs 5175-rs4500= rs675

I=PRT/100

675=4500×R×1/100

R=15%for second year

principal for third year=rs5175

amount=rs6210

interest obtain inn third year on the sum =rs62100-rs 5175=rs1035

I=PRT/100

1035= 5175×R×1/100

R=20% for third years

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