What is the ratio of red, blue and black marbles?
6:3:5
6, 3 and 5
6 - 3 - 5
How can you simplify the ratio 8:32?
4:16
\[\frac{8}{32}\]
1:4
How can you simplify the ratio 2:3.6 so that it does not involve decimals?
36:2
5:9
20:36
How can you simplify the ratio \(\frac{2}{3}:\frac{3}{4}\)?
8:9
2:3
3:4
Purple paint is made by mixing red and blue paint in the ratio 2:3. If 15 litres of blue paint is used, how much red paint will be needed?
5 litres
6 litres
10 litres
The ratio of boys to girls in a class is exactly 4 : 5. Could there be 31 pupils in the class?
Yes
No
Impossible to tell
Two sisters share pocket money in the ratio of their ages. The first girl is 5 and the second girl is 7. The girls are given £36 between them. How much money does the younger girl receive?
£5
£12
£15
Three men receive an overtime bonus of £100 to share between them in the ratio 12:18:30. How much does each man get?
£12, £18 and £30
£20, £30 and £50
£15, £25 and £60
A map has a scale where 1 cm represents 5 km. The distance between two towns is 95 km. What distance would this be on the map?
17 cm
19 cm
21 cm
A floor plan of a house is drawn using the scale of 2 cm : 1.5 m. In the floor plan the length of one of the walls is shown as 15 cm. How long is the actual wall?
11.25 m
12 m
22.5 m