Simple Interest Practice Test 3

Question : 15 of 40

Marks: +1, -0

Simple interest on a certain amount is

9/16

of the principal. If the numbers representing the rate of interest in per cent and time in years be equal, then time for which the principal is lent out, is:

$7 1/2$ years
7 years
$6 1/2$ years
$5 1/2$ years

Validate

Solution:

Let principal = Rs. x; then Interest = Rs.

9 /16 x

; and also, Rate = Time = T
Since,

{9x}/16={x×T×T}/100

⇒T^2={100×9}/16

∴T=30/4=7 1/2\years

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