Quiz

Cambridge Mathematics 9: Ratio and proportion

10 questions with solutions on the Cambridge Mathematics 9 topic: simplifying ratios, sharing in a ratio, direct and inverse proportion, best buys.

Type the number or choose the right answer. When you finish, click Check answers and see the solutions.

1. Simplify the ratio 24 ÷ 36.

A. 3 ÷ 2

B. 2 ÷ 3

C. 4 ÷ 6

D. 1 ÷ 12

2. Share 60 in the ratio 1 ÷ 4. What is the larger part?Enter a number only

3. A recipe for 4 people needs 3 eggs. How many eggs for 12 people?Enter a number only

4. 5 pens cost 60 denars. How much do 8 pens cost?Enter a number only

5. Which is cheaper per gram: 500 g for 120 denars or 750 g for 170 denars?

A. 500 g for 120 denars

B. 750 g for 170 denars

C. the same

D. cannot tell

6. 4 workers finish a job in 6 days. How many days do 8 workers take (at the same rate)?Enter a number only

7. Two numbers are in the ratio 3 ÷ 5. The larger is 40. What is the smaller?Enter a number only

8. On a 1 ÷ 25 000 map the distance is 8 cm. How many km is that?Enter a number only

9. 1 euro = 61.5 denars. How many euros is 246 denars?Enter a number only

10. y is directly proportional to x. If y = 12 when x = 3, what is y when x = 5?Enter a number only