Question

write the full step
Std VI
Sub: Maths
Ls Name: Bank and Simple Interest
Solve.
1)What will be the interest on 315,000 principal
at the rate of 9 p.c.p.a?
2) Principal == 800, Amount = 840.Find rate of
interest and interest of 1 year.
3) Rate of interest = 7%, Interest of 1 year =R42.
Find principal and amount.​

Answer 1

$840 - 800 = \frac{800 \times 1 \times r}{100} \\ \\ = > 40 = \frac{800 \times 1 \times r}{100} \\ \\ = > r = 5$

Rate of Interest will be 5% ✔✔