At the same rate of simple interest, sum of the interest at a principal of 300 for 4 years and the interest at a principal of 400 for 3 years is 120. The rate of interest is

At the same rate of simple interest, sum of the interest at a principa

1.	At the same rate of simple interest, sum of the interest at a principal of 300 for 4 years and the interest at a principal of 400 for 3 years is 120. The rate of interest is
A.	5%
B.	4%
C.	6%
D.	10%
Answer» B. 4%

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At the same rate of simple interest, sum of the interest at a principal of 300 for 4 years and the interest at a principal of 400 for 3 years is 120. The rate of interest is

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