Question

Ria lent ₹ 6500 to Priya for 3 years and ₹ 5600 to Ananya for 5
years on simple interest at the same rate of interest and received
₹ 4750 in all from both of them as interest. Find the rate of
interest per annum.

Answer 1

Answer:

10%

$simple \: interest = \frac{principa \times rate \times time}{100}$

Step-by-step explanation:

Interest from Priya=

$\frac{6500 \times 3 \times r}{100} = 65 \times 3r$

Interest from ananya =

$\frac{5600 \times 5 \times r}{100} = 56 \times 5r$

According to the question

Interest from Priya +interest from ananya =4750

65x3r+56x5r=4750

195r+280r=4750

475r=4750

r=10%