Subject :IMO Class : Class 7
A borrows ₹ 800 at the rate of 12% per annum at simple interest and B borrows ₹ 910 at the rate of 10% per annum at simple interest. In how many years will their amounts of debts be equal?
A18 years
B20 years
C22 years
D24 years
Ans 1:
Class : Class 9
800+800×12×t100
=910+910×10×t100
800+96t=910+91t
5t=110
t=22years
Hence, after 22 years the amount will be equal
Ans 2:
Class : Class 8