Question

The compound interest on Rs. 4,000 for 2 years at l0% per annum is double the simpleinterest on a certain sum of money for 3 years at 8%o per annum. The sum placed on sinpleinterest is :

Answer 1

this is ur answer understand it

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Answer 2

Answer:Rs 1,750

Step-by-step explanation:

2 x S.I = C.I

⇒ 2 x ( PTR ) /100 = P x ( 1 + R/100 )^T - P

⇒ 2 x ( P x 3 x 8 ) / 100 = 4000 x ( 1 + 10 / 100 )^2 - 4000

⇒ 48P / 100 = 4000 x ( 110/100 ) ^2- 4000

⇒ 12P / 25 = 4840 - 4000

⇒ P = ( 840 x 25 ) / 12

⇒ P = 1750

Sum placed on Simple Interest is Rs 1750