Question

find the rate of Interest at which a
Sum of RS.800 yield an Interest of
RS-240 in 3 year's
|​

Answer 1

Answer:

10%p.a.

Step-by-step explanation:

principal=800

rate=r

time=3 years

si=240

si=p*r*t/100

=240=800*3*r/100

=r=240*100/800*3

=10

therefore rate of interest=10% p.a.

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Answer 2

Answer

$\sf SI = \dfrac{P \times R \times T}{100}$

$\sf 240 = \dfrac{800 \times R \times 3}{100}$

$\sf 240 = \dfrac{2400 \tines R}{100}$

$\sf 240 = \dfrac{2400R}{100}$

$\sf R = \dfrac{240 \times 100}{2400}$

$\sf R = \dfrac{1 \times 100}{10}$

$\sf R = \dfrac{100}{10}$

$\sf R = 10\%$