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Ex 8.2, 10 - Chapter 8 Class 8 Comparing Quantities
Last updated at March 23, 2023 by Teachoo
Transcript
Ex 8.2, 10 I purchased a hair-dryer for Rs 5,400 including 8% VAT. Find the price before VAT was added. The price includes VAT means that bill amount has Price + VAT Given Amount Paid (Bill Amount) = 5400 Vat Percentage = 8% Let the Original Price = 𝑥 Tax Amount = Vat Percentage × Original Price = 8% × 𝑥 = 8/100 × 𝑥 = 8𝑥/100 Now, Bill amount = Original Price + Tax Amount 5400 = 𝑥 + 8𝑥/100 5400 = (100𝑥 + 8𝑥)/100 5400 = (108 𝑥)/100 (5400 × 100)/108 = 𝑥 (2700 ×100)/54 = 𝑥 (1350 × 100)/27 = 𝑥 (450 ×100)/9 = 𝑥 50 × 100 = 𝑥 5000 = 𝑥 ∴ 𝑥 = 5000 ∴ Original Price = Rs 5000
