Question

A sum at a simple interest of 12½%amount rs 2,502 after 3 years. find the sum and the interest​

Answer 1

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