Question

A sum of money amount to rs 9800 after 5 years and rs 12005 after 8 years same rate of simple interest. What will be the rate of interest ​

Answer 1

Step-by-step explanation:

A₁ = ₹9800 T₁ = 5 yrs

A₂ = ₹12005 T₂ = 8 yrs

Therefore, SI for 3 yrs = 12005 - 9800 = ₹2205

Therefore, SI for 1 yr = = ₹735

SI₁ (for 5 yrs)= 735 × 5 = ₹3675

P = A₁ - SI₁ = 9800 - 3675 = ₹6125

Therefore, R p.a. = 100 × SI₁ / P × T₁ = 100 × 3675 / 6125 × 5 = 12%

Answer 2

Answer:

12%

Step-by-step explanation:

Simple interest for 3 years = 12005−9800

=2205

Simple interest for

5 years = 2205/3×5= 3675

Sum of money =9800−3675= 6125

R=100x2205/6125x3(I x 100 / P x T) =12 %