1.1.6 Ratio and Proportion

Question 1

Can a ratio be expressed as a fraction?

Answer 1

Yes.

Question 2

If you had two different units i.e. £4 and 7p and you wanted to make a ratio what must you do first?

Answer 2

Make them the same units.

Question 3

How to express the ratio 4:1/4 in its lowest terms?

Answer 3

Flip the fraction over and the ratio becomes 4 x 1/4 = 16/1 = 16:1

Question 4

How do you work out proportional parts of a number?

Answer 4

Add the ratio together, divide the given number by the ration sum, multiply out.

Question 5

What does it mean if two quantities increase or decrease at the same rate?

Answer 5

Direct proportion or vary directly.

Question 6

What is the unitary method?

Answer 6

Reducing one of the variables in direct proportion to one and then increasing it back again to the required value.