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Ratio

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by

R Sheehan

on 4 December 2014

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Transcript of Ratio

Thank You!
Quiz:

Everyone get into your teams
Express the following in their simplest form
4:2

8:24

14:21
Express the following ratios as whole numbers
0.5 : 2

0.25 : 0.75

0.75 : 1.5
Dividing in a given ratio
The ratio of nurses to doctors in a hospital is 7:1.

There are 91 nurses on staff; how many doctors are there?
Proportion
If 7 books cost €55.30, find the cost of 9 books

If 8 litres of milk cost €7.36, find the cost of 11 litres.
Round 1:
Introducing Ratio
Ratio
15:5

2:10

24:16
1/2 : 1/4

1/3 : 2/3

3/5 : 7/10
Divide €1400 between three people in the ratio of 4:2:1
Best Buys:

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