Question

The difference between compound interest and simple
interest accrued on an amount at the end of 3rd year at a rate
of 10% is 77.5 rupees. What is amount?
(a) 2600
(b) 2500
(C) 2800
(d) 2950​

Answer 1

Answer:

b) 2500

Step-by-step explanation:

given

P*(1+10/100)^3 - P - 30P/100 = 77.5

P*1331/1000 - 130P/100 = 77.5

P(1331 - 1300)/1000 = 77.5

P*31/1000 = 77.5

P = 77.5*1000/31

P = 775*100/31

P = 25*100

P = 2500