Question

A person deposited a sum of Rs. 10,000 in a bank. After 2 years, he withdrew Rs. 4,000 and at the end
of 5 years, he received an amount of Rs. 7,900; then the rate of simple interest is:
a) 6%
b) 5%
c) 10%
d) None of these

Answer 1

Answer:

5%

Step-by-step explanation:

A person deposited a sum of Rs. 10,000 in a bank. After 2 years, he withdrew Rs. 4,000 and at the end

let the rate of interest be r%

After 5 years , According the question

7900= 6000+ 10000×2×r/100 +6000×3×r/100

1900=  10000×2×r/100 +6000×3×r/100

1900=200r+180r

1900= 380r

⇒r= 5%

Answer 2

Answer:

5%

Step-by-step explanation:

Go by choices :

interest for first 2 years. = 10000×2×5%

= 1000

interest for next 3 years = 6000×3×5%

= 900

Total interest = 1900

Amount = principal + interest

our principal is reduced to 6000 now because we withdrew 4000 from 10000..

So Amount = 6000 + 1900

= 7900

which is in the question..

So option b satisfies..

It is always better to go with choices..