Ratio and Proportion- Part 4

Question 1

How are ratios cancelled out? What does 7 : 21 cancel down to?

Answer 1

The same way fractions are simplified. 1:3

Question 2

What does ratios in the from of 1:n or n:1 mean?

Answer 2

This means cancel/simplify a ratio to make either the 1st or 2nd number a 1

Question 3

Examples of the form 1:n or n: 1

Answer 3

Question 4

Share £50 in the ratio 1:4

Answer 4

1 + 4 = 5

£50 divided by 5 = £10

£10 x 1 £10 x 4

= £10 : £40

Question 5

27 in the form of 1 : n =

Answer 5

1 : 3

Question 6

Share 100ml into the ratio 3 : 7

Answer 6

3 + 7 = 10

100ml divided by 10 = 10ml

10ml x 3 10ml x 7

= 30ml : 70ml

Question 7

Share 49p in the ration 4 : 2 : 1

Answer 7

4 + 2 + 1 = 7

49p divided by 7 = 7

7p x 4 7p x 2 7p x 1

= 28p : 14p : 7p

Question 8

One day during the Easter holidays, three times as many children as adults went to a theme park.

which of the three fractions matches the ratio?

Ratio = 3:1

Three options: 2/3 & 6/3

3/4 & 1/4

7/4 & 1/4

Answer 8

3/4 & 1/4

Because 3 + 1 = 4

The 3 = 3/4

The 1 = 1/4