Question

Question 7
In what time will Rs 3600 amount to Rs 4320 at 4% per annum with simple interest?
Answer:
3 years
5 years
4 years
2 years and 8 months​

Answer 1

Step-by-step explanation:

We need to subtract 3600 from 4320. The answer is 720. The interest is 720

Now put the formula - P*T*R÷100

3600*T*4=14400*T÷100

and just solve after that

Answer 2

Answer:

The time will be 5 years.

Step-by-step explanation:  

In context to the question asked,  

We have to find the simple interest,  

As per data given in the question,  

We have,  

Principal ( P ) = Rs. $3600$

Rate of interest ( R ) = $4\%$

Amount ( A ) = Rs. $4320$

First, we have to calculate interest,

For that, the formula to be used:

=> Interest = $A - P$

                  = $4320 - 3600$

                  = $720$

So, the interest will be Rs. 720

Now, for calculating the time:

The formula to be used:

$=> T = \frac{100\times I }{P \times R}$

Substituting the given values,

$=> T = \frac{100\times 720 }{3600 \times 4}$

$=> T = \frac{72000 }{14400}$

$=> T = 5 \text { years}$

Hence, the required time is 5 years.