Question

At what percent per annum will the simple interest be

Rs 72 on Rs 1250 in 15 years?​

Answer 1

mv=p×n+p(n+1)n×r/12×2×100,n is the number if months and p is the principle and mv is the maturity value. so n=15×12=180months

1250=72×180+72(180+1)180×r/2×12×100

solve it u will get the answer