Question

in how many years will rs 750 amount to rs 950 at 4 % per annum simple interesrt

Answer 1

S.I= PRT/100 AND S.I= AMOUNT- PRINCIPAL ALSO

AMOUNT-PRINCIPAL= 950-750
= SI= 200rs

NOW;
S.I= PRT/100
200=750×4×t/100 (t=time in years)

200=3000t/100
200=30t
t=200/30

t= 6 years 8 months.....

Answer 2

Find total interest earned:

Rs 950 - Rs 750 = Rs 200

Find the interest earned per year:

1 year = 4% of 750 = 0.04 x 750 = Rs 30

Find the number of years needed:

Number of years = 200 ÷ 30 = 6.67 years or 6 years 8 months

Answer: 6 years 8 months