Question

if rs 360 amounts to 532.80 in 3 years. what will rs720 amount to in 5 years at the same rate percent per annum​

Answer 1

Answer = Rs. 1296

Step-by-step explanation:

Principal = Rs. 360

Amount = Rs. 532.80

Time = 3 years

We know:

SI = A – P = Rs. (532.80 – 360.00)

= Rs. 172.80

Rate = 100* SI / P*T = 100 * 172.80/ 360 * 3

= 17280/1080 = 16%

Now,

Principal = Rs. 720

Rate = 16%

Time = 5 years

We know:

SI = P*R*T/100 = 720 * 16 * 5 / 100 = 720 * 80 /100

= 72 * 8 = Rs. 576

Now,

Amount = SI + P = Rs. ( 576 + 720 ) =

Rs. 1296