Question

Simple interest on a certain sum of money for 3 years at 8% per annum is half the

compound interest on Rs. 4000 for 2 years at 10% per annum. Find the sum of money

which was placed for simple interest.


note: please give the formula and use ci formula ​

Answer 1

Answer:

Rs. 3500

Step-by-step explanation:

C.I. on Rs. 4000 for 2 years :-

4000 [( 100+10 / 100 ) ² - 1]

( where P = 4000 , R = 10 , T = 2)

= 4000 (21/100)

= 840

So Compound Interest is Rs. 840

A.T.Q

S.I. for 3 years = C.I. for 2 years

S.I. for 3 years = 840 ------------ (eq. 1)

S.I. = P X R X T ------------------(eq. 2)

100

From eq. 1 & 2

P X R X T = 840

100

P X R X T = 840 X 100

P X 8 X 3 = 840 X 100

P = 840 X 100

3 X 8

P = 35 X 100

P = 3500 Rs.