Question

rishi earned rs 83.2 at compound rate of interest 8% per annum over two years how much did he invest

Answer 1

Answer:

Step-by-step explanation:

Given that :

Amount earn by rishi = Rs. 83.2;

Rate of interest, R = 8%;

Duration ,T = 2 years;

Compound Interest = P [(1+R/100)^T-1];

Here P is the invested amount:

and 83.2 = compound interest;

83.2 = P [(1+8/100)^2-1];

83.2 = P [(108/100)^2-1];

83.2 = P (1.04-1);

P = 83.2/0.4 = Rs. 208 invested amount

Answer 2

given data

rate=8%

time=2 years

amount earn by rishi = rs 83.2

83.2 = p[(1+8/100)^2-1]

83.2 = p[(108/100)^2-1]

83.2 = P[(1.08)^2-1]

83.2 = P[(1.1664)-1]

83.2 = P[0.1664]

P = 83.2/0.1664 = 500

HIS INVEST IS 500 RS