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A certain sum becomes Rs. 6400 in 4 year...

A certain sum becomes Rs. 6400 in 4 years and Rs. 8200 in 7 years at simple interest. Find the pricipal.

A

Rs. 4000

B

Rs. 4200

C

Rs. 4400

D

Rs. 40000

Text Solution

Verified by Experts

The correct Answer is:
A
(i) S.I. for three years= Rs. 1800.
(ii) S.I. in 3 years = Rs. (8200-6400)=Rs. 1800.
(iii) Interest for 1 year=Rs. 600.
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