Question

a sum at simple interests at 13 ?? % per annum amounts to rs.2502.50 after 4 years. find the sum.

Answer 1

2502.50 x 13 x 4 / 100. = 1301.3

Total = 2502.50 + 1301.3.
= 3803.80

Answer 2

Answer:

1625

Step-by-step explanation:

let the sum be s

A sum at simple interest of 13 1/2% p. a amount to ₹2502.50 after 4 years

r% = 13 1/2%  

=> 27/2%

=> 13.5%

amount = 2502.5

sum = p

time = 4

lets recall a property

p + s.i = amount

p + s.i = 2502.5

p + [p*r*t/100] = 2502.5

p + [p*13.5*4/100] = 2502.5

p + 54p/100 = 2502.5

154p/100 = 2502.5

154p = 2502.5 * 100

154p = 250250

p =  250250/154

p =  1625

hence the principlal is rs.1625