At what rate percent of simple interest will the interest on Rs.3750 be one-fifth of itself in 4 years ? To what will it amount in 15…
Answers:
P = Rs. 3750
I = Rs. 3750 × (1/5)
= Rs. 750
T = 4 years
R = (100 × I)/ (P × T)
= (100 × 750)/ (3750 × 4)
= 5%
Again, P = Rs. 3750
Interest of 4 years = Rs. 750
Interest of 1 years = Rs. (750/4)
Interest of 15 Years = Rs. (750/4) × 15
= Rs. (750 × 15)/4
= Rs. (5625/2)
= Rs. 2812.50
Amount in 15 years will be
= Rs. 3750 + Rs. 2812.50
= Rs. 6562.50
∴ Rate = 5%
Amount in 15 years will be
= Rs. 6562.50