Question

at the rate of interest will rupees 72 become rupees 81 in 2 years with simple annum per year​

Answer 1

$\sf \Large Solution!!$

Amount = Rs 81

Principal = P = Rs 72

Time = T = 2 years

Rate of interest = R

Interest = $\sf \dfrac{P\times R\times T}{100}$

Interest = $\sf \dfrac{72\times R\times 2}{100}$

Interest = $\sf \dfrac{144}{100}R$

Interest = 1.44R

Amount = Interest + Principal

81 = 1.44R + 72

81 - 72 = 1.44R

9 = 1.44R

R = 9 ÷ 1.44

R = 6.25

Rate of interest = 6.25%

Answer 2

Answer:

your answer= rate of interest =25/4%

Step-by-step explanation:

i hope it may help you