Question

The difference between the simple interest and compound interest on a certain sum for 2 years at 15% interest is rupees 90 find the principal

Answer 1

Step-by-step explanation:

15%=3/20

So ve can suppose any no which is divisible by 20

Let Principal=400

1st year=15%of400=60

2nd year=60+15%of60=60+9=69

Difference ci and si=69-60=9

Here

9=90(given)

1=10

Principal=100×10=1000

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