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**NCERT Solutions for Class 8 Maths Chapter 7 ****Comparing Quantities**** Ex 7.2**

**Ex 7.2 Class 8 Maths Question 1.**

### During a sale, a shop offered a discount of 10% on the marked prices of all the items. What would a customer have to pay for a pair of jeans marked at ₹ 1450 and two shirts marked at ₹ 850 each?

**Solution:**Marked price (MP) of a pair of jeans = ₹ 1,450

Marked price of two shirts = ₹ 850 × 2 = ₹ 1,700

Total marked price = ₹ 1,450 + ₹ 1,700 = ₹ 3,150

Discount = 10%

**Ex 7.2 Class 8 Maths Question 2.**

### The price of a TV is ₹ 13,000. The sales tax charged on it is at the rate of 12%. Find the amount that Vinod will have to pay if he buys it.

**Solution:**Marked price of the TV = ₹ 13,000

Sales tax = 12%

The required amount that Vinod will have to pay is ₹ 14,560.

**Ex 7.2 Class 8 Maths Question 3.**

### Arun bought a pair of skates at a sale where the discount given was 20%. If the amount he pays is ₹ 1,600, find the marked price.

**Solution:**Let the marked price of the skates be ₹ 100.

Discount = ₹ 20% of 100 = ₹ 20

Selling price = ₹ 100 – ₹ 20 = ₹ 80

If selling price is ₹ 80, then the marked price = ₹ 100

If selling price is ₹ 1, then the marked price = ₹ 100/80

If selling price is ₹ 1,600, then the marked price = ₹ 100/80 × 1600 = ₹ 2,000

Thus, the marked price of the pair of skates is ₹ 2000.

**Ex 7.2 Class 8 Maths Question 4.**

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

**Solution:**Let the original price of hair-dryer be ₹ 100.

VAT = 8% of 100 = ₹ 8

Selling price = ₹ 100 + ₹ 8 = ₹ 108

If selling price is ₹ 108, then the original price = ₹ 100

If selling price is ₹ 1, then the original price = ₹ 100/108

If selling price is ₹ 5,400, then the original price = ₹ 100/108 × 5,400 = ₹ 5,000

Thus, the price of the hair-dryer before the VAT was added is ₹ 5000.

**Ex 7.2 Class 8 Maths Question 5.**

### An article was purchased for ₹ 1239 including GST of 18%. Find the price of the article before GST was added?

**Solution:**Let the price of the article before GST was added be ₹ 100.

GST = 18% of 100 = ₹ 18

Selling price = ₹ 100 + ₹ 18 = ₹ 118

If selling price is ₹ 118, then the original price = ₹ 100

If selling price is ₹ 1, then the original price = ₹ 100/118

If selling price is ₹ 1,239, then the original price = ₹ 100/118 × 1,239 = ₹ 1,050

Thus, the price of the article before the GST was added is ₹ 1050.

**Related Links:**

**NCERT Solutions for Maths Class 9**

**NCERT Solutions for Maths Class 10**

**NCERT Solutions for Maths Class 11**