Ncert solutions

Ncert solutions

Grade 8

Comparing Quantities | Exercise 8.3

Question 12

Q12) A scooter was bought at Rs.42,000. Its value depreciated at the rate of 8% per annum. Find its value after one year.

Solution:

Here, Principal (P) = Rs. 42,000, Rate of Interest (R) = 8%, Time (n) = 1 years.

Amount (A) = P\left(1-\frac{R}{100}\right)^n

= 42000\left(1-\frac{8}{100}\right)^1

= 42000\left(1+\frac{2}{25}\right)^1

= 42000\left(\frac{27}{25}\right)^1

= 42000\times\frac{27}{25}

= Rs. 38,640

Hence, the value of scooter after one year is Rs. 38,640.

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Question 12

Q12) A scooter was bought at Rs.42,000. Its value depreciated at the rate of 8% per annum. Find its value after one year.

Solution:

Here, Principal (P) = Rs. 42,000, Rate of Interest (R) = 8%, Time (n) = 1 years.

Amount (A) = P\left(1-\frac{R}{100}\right)^n

= 42000\left(1-\frac{8}{100}\right)^1

= 42000\left(1+\frac{2}{25}\right)^1

= 42000\left(\frac{27}{25}\right)^1

= 42000\times\frac{27}{25}

= Rs. 38,640

Hence, the value of scooter after one year is Rs. 38,640.

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