Question

04. Susan's mother account had some amount which was gilted to
money for few months. If she withdraws Rs.10,000 in first month and deposits Rs. 8000 in the
second month in the account. She starts withdrawing and depositing out
that after 8 months there is zero balance. Mother got annoyed and asked
money back. Susan returned Rs 5000 to her mother and asked for some
over amo
mount. How much more money has to be given back? Mother asked her to pay Rs 100
extra for one month as interest in order to teach her a lesson. If she had rem
months how much money Susan paid as interest?​

Answer 1

Interest paid by Susan = Rs 300

Interest paid by Susan = Rs 300

The difference between money deposited and withdrawn from the account after 1st monthc= Rs 2000

From this we can know that after every month Rs. 2000 will be  reduced.

Therefore after 8 months total amount reduced  = 2000 x 7 + 10000 = 24000

Initial amount = Rs 24000

Returned amount = Rs 5000

Remaining amount to be paid = 24000− 5000 = 19000 + interest on remaining amount.

As she paid the amount back after 3 months

Interest paid by Susan = Rs 100 × 3 = Rs 300