Delhi Police Constable Exam Model Paper 2

Question : 81 of 100

Marks: +1, -0

What is the total amount of compound interest paid by Rahul to Vinay for sum of Rs. 12600 at the end of 3 years if rate of 1st year is 25% p.a, for 2ndyear it is20% p.a and for last year it is 10% p.a?

Rs. 6470
Rs. 9370
Rs. 7280
Rs. 8190

Validate

Solution:

GIVEN:
Sum = Rs. 12600
FORMULA USED:

CI = P (1 + {R_1}/100 ) (1 +{R_2}/100 )…− P

CALCULATION:
CI

= [12600 × (1.25) × (1.2) × (1.1)] – 12600

[15750 × (1.2) × (1.1)] – 12600

= [18900 × (1.1)] – 12600

= 20790 – 12600

= 8190

Hence, interest amount = Rs. 8190

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