Question

The pie chart shows how 36 pupils travel to school.

Use the pie chart to complete the table.
Bike
Walk
Travel to
school
Number
of pupils
Walk
9
120°
Car
Bus
Bus
Car
Bike
Total
36

Answer 1

Look at picture

Explanation:

Answer 2

`Bike = 7`

`Car = 8`

`Walk = 9`

`Bus = 12`

Explanation:

Given

`Bus = 120^o`

`Walk = 90^o`

`Car = 80^o`

`n = 36` --- pupils

Required

Determine the number of students in each category

This is calculated by dividing the measure of each category by 360; then multiply the result by the number of pupils:

So, we have:

`Bus = (120)/(360) * 36 = (1)/(3) * 36 = 12`

`Walk = (90)/(360) * 36= (1)/(4) * 36 = 9`

`Car = (80)/(360) * 36 = (80)/(10) = 8`

To calculate the number of students that travel by bike, we have:

`Car + Bike + Walk + Bus= n`

Substitute values

`8 + Bike + 9+ 12= 36`

Collect like terms

`Bike = 36 - 8 - 9 - 12`

`Bike = 7`