Question

At simple interest a sum becomes 8/7 of itself in 2.5 years. The rate of interest per annum is ?

( Using Shortrough ) pls ​

Answer 1

Answer:

Step-by-step explanation:

For simple interest of r% per annum, the Principal P will become Pt after t years is governed by the formula Pt=P(1+rt)

Here, Pt=87P,t=1⇒87P=P(1+r)⇒r=8/7−1=1/7=14.28

Step-by-step explanation:

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