Question

If rs 16800 amounts to rs. 21840 in 5 years then find the rate of interest ​

Answer 1

Answer:

S.I=Amount-principle =21840-16800=5040

time=5years

S.I=P×R×T/100

5040=16800×R×5/100

R=5040/(168×5)=6%

(PLEASE MARK BRAINLIEST FRIEND)

Answer 2

$\huge{\boxed{\red{\bf{Question:-}}}}$

If ₹16,800 amounts to ₹21,840 in 5 years then find the rate of interest.

$\huge{\boxed{\red{\bf{Solution:-}}}}$

Let the rate of interest( r ) be = ${x}$%p.a.

Amount ( P ) = ₹16,800

Interest ${( I )}$ = ₹(21840-16800)

=> ₹5,040

time ( t ) = 5 years

${\boxed{\bf{{I}=\frac{P×r×t}{100}}}}$

${5040} =\frac{16800 × x × 5}{100}$

${5040} ={168 × x × 5}$

${5040}={840x}$

${x}=\frac{5040}{840}$

${x}={6}$

$\huge{\boxed{\red{\bf{Answer:-}}}}$

The rate of interest is ${6}$ % p.a.