Question

what sum of money will amount to Rupees 7342 at 5.2 % per annum interest in 3 year​

Answer 1

Answer:

6351.21

Given:-

• amount =7342
• rate = 5.2%
• Time = 3 years

To find :-

• principle

Solution:-

firstly,

assume principle will be X

as we all know

Amount = principle + s.i

7342 = X + s.i

Simple intrest = 7342 + X

$now \\ as \: we \: all \: know \\ \\ s.i = \frac{p \times t \times r}{100} \\ \\ 7342 - x = \frac{x \times 3 \times 5.2}{100} \\ \\ 7342 - x = \frac{x \times 3 \times 52}{1000} \\ \\ 1000(7342 - x) = x \times 3 \times 52 \\ \\ 7342000 - 1000x = x \times 3 \times 52 \\ \\ 7342000 - 1000x = 156x \\ \\ - 1000x - 156x = - 7342000 \\ \\ - 1156x = - 7342000 \\ \\ x = \frac{ - 7342000 }{- 1156} \\ \\ x = 6351.21$