Question

4. Write some problems in your daily life which

involved simple equations.​

Answer 1

Answer:

Explanation : Understand the problem. The area of a rectangle is 72 cm. The width is twice its length. Write the variable. Let "x" be the length and "2x" be the width. Write the equation. Length × Width = Area. x x (2x) = 2x2= Area. Solve the equation. 2x2 = Area. 2x2 = 72. Check your answer. The length is 6 cm

Answer 2

Answer:

You purchased 10 items from a shopping plaza, and now you need plastic bags to carry them home. If each bag can hold only 3 items, how many plastic bags you will need to accommodate 10 items?

10 items3 items/bag = 3.33 bags ≈ 4bags

Explanation :

The figure below illustrates the problem:

The different shapes inside the bags denote different items purchased. The number depicts the item number.

Algebra in Daily usage - Shopping Bag

We use simple algebraic formula xy to calculate the number of bags.

x = Number of items purchased = 10

y = Capacity of 1 bag = 3

Hence,

103 = 3.33 bags ≈ 4 bags

So,we need 4 shopping bags to put 10 items.