Reading a proportion

Exercise and reference answers

Questions

1. Question

   If 1 kg of sugar costs 36, then 3 kg costs

   Choices

   1. 36
   2. 12
   3. 108

   Correct choice

   108

2. Question

   Quantity and cost are in

   Choices

   1. direct proportion
   2. inverse proportion
   3. no relation

   Correct choice

   direct proportion

3. Question

   If x and y vary directly, then x/y is

   Choices

   1. always 1
   2. a constant
   3. always increasing

   Correct choice

   a constant

4. Question

   If x and y vary inversely, then xy is

   Choices

   1. always 0
   2. always growing
   3. a constant

   Correct choice

   a constant

Explanation