Question

a principal yielded an interest of rs 250 at certain rate in certain time. if the principle the rate and the time are doubled. the yield of interest will be. ​

Answer 1

Explanation:

Let the principal be p , rate of interest be r and time period be t.

interest = rs250

p×r×t/100 = 250

p×r×t = 250×100 =25000 -------------(i)

when p= 2p

r= 2r

t=2t

interest= 2p×2r×2t/100

=2×2×2×p×r×t /100

= 8×25000/100

=4000