Question

At what rate gives Rs.2240 as interest on a sum of Rs.8000 in 4years​

Answer 1

Answer:

7%

Step-by-step explanation:

prt/100 = RS 2240

8000*r*4/100

80*r*4= 2240

r=2240/80*4

r=7%

Answer 2

Given: $SI= Rs.2240,P= Rs.8000,T=4yrs.$

We have to find the rate of interest.

As we know that the formula to calculate the simple interest is:

$SI=\frac{P\times R\times T}{100}$

We are solving in the following way:

We have,

$SI=\frac{P\times R\times T}{100}$

$=>2240=\frac{8000\times R\times4}{100} \\\\=>2240\times100=8000\times R\times4\\\\=>224000=8000\times R\times4\\\\=>\frac{224000}{8000\times4} =R\\=>R=7$

Solving the above equation we get,

Rate=$7$%

Hence, the rate of interest will be $7$%.