Question

A sum of of rupees 15000 put at simple interest for 8 years becomes rupees 25800 the rate of interest of per annum is​

Answer 1

Answer:

R [Rate/year] = (SI × 100) / (P × T)

R = (25800 x 100) / (15000 x 8)

R = 21.5

Answer 2

Answer:r=7.26744

Step-by-step explanation:

Given:T=8,P=25800,interest=15000

r = ?

Here P =principal.T=time,r=interest rate,

We know that

$intereste=\frac{p*r*t}{100}$

$15000=\frac{25800*r*8}{100}\\r=\frac{1500000}{206400} \\\\r=7.26744$