SCERT AP 7th Class Maths Solutions Pdf Chapter 7 Ratio and Proportion Ex 7.6 Textbook Exercise Questions and Answers.

## AP State Syllabus 7th Class Maths Solutions 7th Lesson Ratio and Proportion Ex 7.6

Question 1.

A shop selling sewing machines, offers 3% discount on purchases. If the marked price is ₹ 6500. then what is the selling price?

Answer:

Method 1:

Given the marked price = ₹ 6500

bis count = 3%

Disount calculated on marked price.

Discount = 3% of ₹ 6500

∴ Discount = ₹ 195

Selling price

= Marked price – Discount = 6500 – 195

∴ Selling price of sewing machine

= ₹ 6305

Method 2 :

M.P = 100% = ₹ 6500

S.P at a discount of 3%

= (100 – 3)% =?

So, if 100% = 6500

97% = ?

S.P = \(\frac{97}{100}\) × 6500 = ₹ 6305

Question 2.

The marked price of a ceiling fan is ₹ 720 during off season, it is sold for ₹ 684. Determine the discount percentage.

Answer:

Given marked price = ₹ 720

Selling price = ₹ 684

Discount = M.P – S.P = 720 – 684

= ₹ 36

Discount percent = \(\frac{\text { Discount }}{\mathrm{MP}}\) × 100

= 5%

∴ Discount percent = 5%

Question 3.

A publisher gives 32% discount on the printed price of books to book sellers. If the printed price is ₹ 275, then what amount does the seller has to pay to publisher?

Sol. Given printed (marked) price = ₹ 275

Discount percent = 32%

Selling price = M.P – Discount = 275 – 88

∴ Selling price of books = ₹ 187

Question 4.

Rohit buys an item at 25% discount on the marked price. If he bought it for ₹ 660, what is the marked price?

Answer:

Method 1 :

Given selling price = ₹ 660

Discount percentage = 25%

Let the marked price = ₹ x

Marked price – Selling price = Discount

x – 660 = \(\frac{x}{4}\)

∴ Marked price = ₹ 880

Method 2 : M.P = 100% (say)

S.P at a discount of 25% means

S.P = (100 – 25) = 75%

∴ If 75% = ₹ 660 then 100% =?

⇒ SP = \(\frac{100}{75}\) × 660 = ₹ 880