Simple Interest - Arithmetic Aptitude Questions and Answers

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What will be the ratio of simple interest earned by certain amount at the same rate of interest for 6 years and that for 9 years?

1 : 3

1 : 4

2 : 3

Data inadequate

None of these

Answer : Option C

Explanation :

Let the principal be P and rate of interest be R%.

Required ratio =	$\left(\frac { P\times R\times 6 } {100}\right)$	=		$\frac { 6PR } { 9PR }$ =		$\frac { 6 } { 9 }$ = 2 : 3.
	$\left(\frac { P\times R\times 9 } {100}\right)$

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