Question

At what per cent per annum simple interest RS 650 will amount to RS 741 in 3 year and 6 month ?

Answer 1

si=a-p
si=741-650=91
si=[prt]/100
91=[650*r*3.5]/100
91*100=2275.0*r
9100/2275=r
5ade percent=4%

Answer 2

The rate of interest is 4%.

Step-by-step explanation:

Principal = Rs. 650

Amount = Rs. 741

Time = years and 6 months = 3.5 years

Using the given information we get

$Interest= Amount-Principal=741-650=91$

Formula of simple interest:

$I=\dfrac{P\times r\times t}{100}$

where, P is principal, r is rate of interest, t is time in years.

$91=\dfrac{650\times r\times 3.5}{100}$

$91=\dfrac{2275r}{100}$

$91=22.75r$

Divide both sides by 22.75.

$\dfrac{91}{22.75}=r$

$4=r$

Therefore, the rate of interest is 4%.

#Learn more

Find the simple interest for

P= 3000

R= 12%

T= 3 years

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