Question

In what time will ₹ 3600 amount to ₹ 4320 at 4% per annum simple interest​

Answer 1

Given :

• Principal = Rs.3600
• Amount = Rs.4320
• Rate = 4 %

To Find :

• Time = ?

SolutioN :

~ Formula Used :

• ${\underline{\boxed{\pmb{\sf{ Simple \; Interest = Amount - Principal }}}}}$

• ${\underline{\boxed{\pmb{\sf{ Simple \; Interest = \dfrac{Principal \times Rate \times Time}{100} }}}}}$

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~ Calculating the Time :

${\implies{\qquad{\sf{ Simple \; Interest = \dfrac{Principal \times Rate \times Time}{100} }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ Amount - Principal = \dfrac{Principal \times Rate \times Time}{100} }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ 4320 - 3600 = \dfrac{3600 \times 4 \times Time}{100} }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ 720 = \dfrac{3600 \times 4 \times Time}{100} }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ 720 = \dfrac{14400 \times Time}{100} }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ 720 \times 100 = 14400 \times Time }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ 72000 = 14400 \times Time }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ \dfrac{72000}{14400} = Time }}}} \\ \\ \\ \ {\implies{\qquad{\sf{ \cancel\dfrac{72000}{14400} = Time }}}} \\ \\ \\ \ {\qquad \; \; {\therefore \; {\underline{\boxed{\purple{\pmb{\frak{ Time = 5 \; years }}}}}}}}$

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~ Therefore :

❛❛ The time on this sum of money is 5 years . ❜❜

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