Question

Amar and Chaman Boro 2250 rupees and 2500 rupees respectively at the same rate of simple interest 3 whole 1 upon 2 years if Chaman paid rupees 140 more interested then find the rate of interest per annum​

Answer 1

Answer:

r= 16 %

Step-by-step explanation:

t= 7/2 yrs

interest paid by chaman = ptr/100

I = 2500×7/2× r/100

interest paid by Amar = 2250×7/2×r/100

2500×7/2×r/100 - 2250×7/2×r/100= 140

7/2 × r/100 ( 2500-2250) = 140

7/2 × r/100 × 250= 140

r = 140× 2/7 × 100 ×1/250

r = 16

r = 16/%