Question

At a certain rate of simple interest, ₹10000 becomes ₹12400 in 3 years. What
sum of money will become ₹9900 in 4 years at the same rate of interest?

PLease reply fast!~

Answer 1

Answer: Rs 7500

Step-by-step explanation:

                        PART 1

Principal= 10000

Amount= 12400

Time= 3 years

Simple Interest= ?

Simple interest= Amount-Principal

Simple interest= 12400-10000= 2400

Therefore: Rate of simple interest= 100 × SI ÷ Principal × Time

Rate= 100× 2400÷ 10000× 3

      = 8%

                       PART 2

Amount= Rs 9900

Time= 4 years

Rate= 8%

Simple interest= Rs 2400

Principal= ?

Principal= SI × 100 ÷ Rate × Time

Therefore: P = 2400 × 100 ÷ 8 × 4

    Principal= Rs 7500      

Hope this helps :D