Ncert solutions

Ncert solutions

Grade 8

Comparing Quantities | Exercise 8.2

Question 10

Q10) I purchased a hair-dryer for Rs.5,400 including 8% VAT. Find the price before VAT was added.

Solution:

C.P. = Rs.5,400 and Rate of VAT = 8%

Let C.P. without VAT is Rs. 100, then price including VAT = 100 + 8 = Rs.108

\because When price including VAT is Rs.108, then original price = Rs.100

\therefore When price including VAT is Rs.1, then original price = \frac{100}{108}

\therefore When price including VAT is Rs.5400, then original price = \frac{100}{108}\times5400=Rs.\ 5000

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Question 10

Q10) I purchased a hair-dryer for Rs.5,400 including 8% VAT. Find the price before VAT was added.

Solution:

C.P. = Rs.5,400 and Rate of VAT = 8%

Let C.P. without VAT is Rs. 100, then price including VAT = 100 + 8 = Rs.108

\because When price including VAT is Rs.108, then original price = Rs.100

\therefore When price including VAT is Rs.1, then original price = \frac{100}{108}

\therefore When price including VAT is Rs.5400, then original price = \frac{100}{108}\times5400=Rs.\ 5000

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