Question

A sum of money lent at simple interest amounts to Rs 783 in 2 years and to Rs 837 in 3 years. Find the sum and the rate per cent per annum.
​

Answer 1

Amount after 2 years =Rs.783

Amount after 3 years =Rs.837

Therefore,

S.I. of 1 year =837−783=Rs.54

S.I. of 2 years =54×2=Rs.108

Principal sum =783−108=Rs.675

Therefore,

$\\ \\ \\ \\ \\ \\ SI = \frac{ PRT}{100} \\ \\ \\ \\ 54 = \frac{675 \times \: R \times 1}{100} \\ \\ \\ R = \frac{54 \times 100}{675} \\ \\ \\ \\ R = 8\%$

• THEREFORE, RATE OF INTEREST IS 8%

• SUM IS RS 675

Answer 2

Answer:

⇒R=  

675

54×100

​

=8%

Step-by-step explanation:

plz mark me as brainlist