Question

SWILL
10
6
On what sum will the difference between the simple and compound interest for 3 years
at 10% p.a. is 232-50?
The simple interest on a certain sum for 3 years is 1080 and the compound interest
on the same sum at the same rate for 2 years is 741.60. Find:
(i) the rate of interest
(ii) the principal.
8 In what time will *2400 amount to *2646 at 10% p.a. compounded semi-annually?
9 Sudarshan invested 60000 in a finance company and received 579860 after 1 years.
Find the rate of interest per annum compounded half-yearly.
The population of a city is 320000. If the annual birth rate is 9.2% and the annual death
rate is 1.7%, calculate the population of the town after 3 years.
Hint. Net growth rate = 9.2% – 1.7% = 7.5%.
11 The cost of a car, purchased 2 years ago, depreciates at the rate of 20% every year. If
its present worth is 315600, find :
(i) its purchase price
(ii) its value after 3 years.
12 Amar Singh started a business with an initial investment of 400000. In the first year,
he incurred a loss of 4%. However, during the second year, he earned a profit of 5%
which in the third year rose to 10%. Calculate his net profit for the entire period of
3 years.​

Answer 1

Gretchen Modern been March Marchdrawn