Question

Find the time when
i. principal = Rs 300, simple interest = 6.75 and rate=4 1/2%p.a.​

Answer 1

Step-by-step explanation:

Given:

principal = Rs 300,

principal = Rs 300, simple interest = 6.75

principal = Rs 300, simple interest = 6.75 rate=4 1/2%p.a.

To find :

Time

Formula applying:

$formula = \frac{p \times r \times t}{100} = simple \: interest$

P stands for principle

R stands for rate of interest

T stands for time

Solution:

Let the time be x

Convert rate of interest in improper fraction =

$= > 4 \frac{1}{2} = \frac{9}{2} \%$

Now, rate is 9/2%.

$= > \frac{300 \times 9 \times x}{100 \times 2} = 6.75$

$= > \frac{3 \times 9 \times x}{2} = 6.75$

$= > \frac{21x}{2} = 6.75$

$= > x = \frac{6.75 \times 2}{21}$

$= > x = \frac{13.5}{21}$

$= > x = 0.64$

We will multiply it by 12 to get it into months.

0.64X 12= 7.68 months

7.68 = 9 months approx.

Answer 2

Answer:

the answer is 6 months

Step-by-step explanation:

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