Math, asked by anjalimore011, 6 months ago

14) Sandeep borrowed * 3000 for 4 years and 8000 for 2 1/2 years from Sonia at the same rate of interest. The total interest earned by Sonia is 2880. Find the rate of interest.​

Answers

Answered by DM2520
4

Answer:

r = 9%

Step-by-step explanation:

Simple interest =Principle×rate×time/100

Total interest =3000×r×4/100 +8000×r×5/2÷100=2880

⇒10r(12+20)=2880

⇒r=288/32

⇒r=9%

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