Question

Answer the following word problems. Show all calculations 7.1. In a class of 40 learners the ratio of boys to girls is 53 a. How many boys are there? (2) b. How many girls are there? (2)​

Answer 1

Answer:

$raio \: to \: the \: boys \: to \: the \: girls \: = 5 \: is \: to \: 3. \\ let \: the \: ratio \: be \: 3x \: and \: 5x. \\ 3x + 5x = 40. \\ 8x = 40. \\ x = \frac{40}{8} = 5. \\ x = 5. \\ 5x = 5 \times 5 = 25. \\ 3x = 3 \times 5 = 15. \\ hence \: boys \: are \: 25 \: and \: \\ girls \: are \: 15.$

Answer 2

Answer:

Solution given:

ratio of boys to the girls=5:3

let ratio be 5x and 3x

we have

5x+3x=40

8x=40

x=40/8

x=5

5x=5*5=25

3x=3*5=15

No of boys=25

No of girls=15