Solving Simple Ratio Problems (Ex. 3)

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1. Question 1

   Multiple choice

   A classroom has chairs and tables in ratio 4:1. There are 20 chairs. How many tables are there?

2. Question 2

   Multiple choice

   A picture is enlarged to scale 1:5. If a cat in the picture is 3 cm tall, how tall is it in the enlargement?

3. Question 3

   Multiple choice

   A mixture uses red and blue paint in ratio 1:4. How much blue is needed for 3 litres of red?

4. Question 4

   Sequence

   Tables to chairs: 1 table:4 chairs, 2 tables:8 chairs, 3 tables:12 chairs, 4 tables:___ chairs, 5 tables:20 chairs. What is the missing value?

5. Question 5

   True or false

   In ratio 3:4, if the first quantity is 9 then the second is 12.

More exercises in this module

• Equations with an Unknown Symbol (Ex. 1)

• Understanding Ratio Notation (Ex. 3)

• Substituting Values into Simple Formulas (Ex. 3)

• Substituting Values into Simple Formulas (Ex. 2)

• Proportional Relationships in Scaling (Ex. 2)

• Solving Simple Ratio Problems (Ex. 1)