A certain sum becomes Rs. 20720 in four years and 24080 in six years at simple interest. Find sum and rate of interest?

A certain sum becomes Rs. 20720 in four years and 24080 in six year

1.	A certain sum becomes Rs. 20720 in four years and 24080 in six years at simple interest. Find sum and rate of interest?
A.	Rs. 12000; 12% p.a.
B.	Rs. 14000; 12% p.a.
C.	Rs. 12000; 15% p.a.
D.	Rs. 14000; 15% p.a.
Answer» C. Rs. 12000; 15% p.a.

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A certain sum becomes Rs. 20720 in four years and 24080 in six years at simple interest. Find sum and rate of interest?

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