Question

rupees 750 in 3years 4 month at 10percent per annum find interest and amount

Answer 1

S.I = PRT/100
= 750×10×40/100×12
= 75×40/12
=25×10=250

Answer 2

Heya!

Since the rate is given per annum, let's find the interest for 3 years first.

SI = PRT/100
where,
P = 750
R = 10 % pa
T = 3 years

SI = 750 × 10 × 3 / 100 = ₹225

SI for 1 year = 225/3 = 75
SI for 1 month = 75/12 = 6.25
SI for 4 months = 6.25 × 4 = ₹25

Total SI for 3 years and 4 months
= 225 + 25 = ₹250

Total Amount
= 750 + 250 = ₹1000

Hope it helps!!