Also, note that, 6,250 = 510
C. I. = Interest for (1st + 2nd) quarter
= 250 + 260 = 7510
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12
1
Exercise-7.4
year
1. Rashmi borrowed * 20,000 from a money lender at the rate of 4% per annum for 1-years compounded
1
2
1
half-yearly. Find the amount she has to pay at the end of 1-years.
2
2. Find the compound interest on a sum of 12,000 at the rate of 8% per annum for 1 year compounded
quarterly.
3. Dhani borrowed *18,000 from her friend at the rate of 12% per annum at simple interest. She lent it
further to another friend Aarti at the same rate but compounded annually. Find the profit that Dhani earns
after 2 years.
4. Find the amount and interest on 24,000 for 9 months, being given that interest is compounded quarterly
at the rate of 20 paisa a rupee per annum.
5. What is the compound interest on 7 4,000 for 9 months at 6% p. a, if the interest is calculated quarterly?
?
Mathematics-8 111