Question

The interest of a short time in x years at the rate of annum 3/5 by the amount find the value of x.​

Answer 1

Answer:

I don't know

sorry

Step-by-step explanation:

because my maths is very weak

Answer 2

Answer:

GIVEN:

Interest for the third year is Rs. 4320

R = 20%

CONCEPT:

Total amount at the end of 2 years to be subtracted from total amount at the end of 3 years

FORMULA USED:

CI = P × [(1 + R/100)T – 1]

P → Principal, R → Rate, T → Time

CALCULATION:

According the question,

Person invested Rs. x at rate of 20% per annum compound interest

Total amount at the end of 2 years = x × (1.2)2 = 1.44x

Total amount at the end of 3 years = x × (1.2)3 = 1.728x

According to the question:

Interest for the third year

⇒ 1.728x – 1.44x = 4320

⇒ 0.288x = 4320

⇒ x = 15000

∴ The value of x is Rs.15000.