Answer :

To find out how many children are wearing jumpers, you can use the proportion of children wearing jumpers to the total number of children.

Given that 2 out of 8 children are wearing jumpers, and there are 40 children in total, you can set up the proportion:

Number of children wearing jumpers / Total number of children = 2/8

Let x represent the number of children wearing jumpers. Then, the proportion becomes:

x / 40 = 2/8

To solve for x, cross multiply:

8x = 2 × 40

8x = 80

Now, divide both sides by 8:

x = 80 / 8

x = 10

So, there are 10 children wearing jumpers in the class.

Answer:

10 are wearing jumper

Step-by-step explanation:

2

- × 40

8

2×5=10

10 are wearing jumper

.

.. so 10 are wearing jumper