Karen Morrison and Nick Hamshaw Solutions for Exercise 10: Exercise 21.10

A car used $45$litres of fuel to travel $495 \mathrm{km}$.

How much fuel would the car use to travel $190 \mathrm{km}$ at the same rate?

This graph shows the directly proportional relationship between lengths in meters (metric) and lengths in feet (imperial).

Use the graph to estimate how many feet there are in four meters.

This graph shows the directly proportional relationship between lengths in meters (metric) and lengths in feet (imperial).

Given that $1 \mathrm{m}=3.28$ feet and one foot$=0.305 \mathrm{m}$, calculate how many feet there are in $4$ meters.

This graph shows the directly proportional relationship between lengths in meters (metric) and lengths in feet (imperial).

Which is longer:

four meters or $12$feet

This graph shows the directly proportional relationship between lengths in meters (metric) and lengths in feet (imperial).

Which is longer:

$20$feet or $6.5$ meters?

This graph shows the directly proportional relationship between lengths in meters (metric) and lengths in feet (imperial).

Mr Bokomo has a length of fabric $9 \mathrm{m}$ long.

What is the length to the nearest foot?

This graph shows the directly proportional relationship between lengths in meters (metric) and lengths in feet (imperial).

Mr Bokomo has a length of fabric $9 \mathrm{m}$ long.

He cuts and sells $1.5 \mathrm{m}$ to Mrs.Johannes and $3 \mathrm{ft}$ to Mr. Moosa. How much is left in meters?

This graph shows the directly proportional relationship between lengths in meters (metric) and lengths in feet (imperial).

A driveway was $18 \mathrm{feet}$long. It was resurfaced and extended to be one meter longer than previously. How long is the newly resurfaced driveway in meters?