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# Exercise 7.4

8th Maths : Chapter 7 : Information Processing : Exercise 7.4 : Text Book Back Numerical problems, Exercises Questions with Answers, Solution

Exercise 7.4

1. Find the best buy of the following purchases:

(i) A pack of 5 chocolate bars for 175 or 3 chocolate bars for 114?

Solution:

(i)

Best buy is a pack of 5 chocolate bars for  ₹  175.

(ii)

Best buy is 15 eggs for  ₹ 64.50

2. Using the given picture find the total special offer price of fresh sweets and bakery products to buy ½ kg laddu, 1 kg cake, 6 pockets of bread.

Solution:

3. Using the given picture prepare a price list.

Suppose you plan to buy 1½ kg of apple, 2 kg of pomegranate, 2 kg of banana, 3 kg of mango, ½ kg of papaya, 3 kg of onion, 1½ kg of tomato, and 1 kg of carrot in shop 1, how much will you save compared to shop 2.

Solution:

Price in shop 2 − Shop 1 = 715 − 675.75

=  ₹  39.25

We can save  ₹  39.25 in shop 1 compared to shop 2.

4. You want to buy some grocery items as per your shopping list that are given in the picture with their price. Also you have a bag that capacity of carrying 7 kg. Using weight ratio approach tabulate to find the total price and how much can you buy more grocery items within your budget of 1000 and not exceeding 7 kg.

Shopping list

1.  2 kg of red chilli

2. 2 kg of coriander

3. 1 kg of garlic

4. 1 kg of tamarind

5. 2 kg of toor dal

Solution:

Objective Type Questions

(a) using special music

(b) making them think that they need the item

(c) using attractive pictures

(d) all the above

6. When I go shopping, I will buy

(a) something that looks attractive

(b) something my friend has

(c) something that I need to purchase

(d) the first thing I see in the store

[Answer: (c) something that I need to purchase]

7. The best shopping choice is to

(a) shop at brand name stores always buy

(b) compare the choices before buying

(c) the same thing my friends bought

(d) buy at a regular shop always

Exercise 7.4

1. (i) 5 Chocolate bars for ₹ 175b (ii) 15 eggs for ₹ 64.50

2. ₹ 634

3. ₹ 39.25

4. ₹ 809

5. (d) all the above

7. (c) something that I need to purchase

(b) Compare the choices before buying

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8th Maths : Chapter 7 : Information Processing : Exercise 7.4 | Questions with Answers, Solution | Information Processing | Chapter 7 | 8th Maths