Numeracy Worksheet - Castlebrae Community High School - 2012 Page 35
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47FHS Numeracy
Ratio
contents page
Sharing in a given ratio
Example
Lauren and Sean earn money by washing cars. By the end of the day
they have made £90. As Lauren did more of the work, they decide to
Level 3
share the profits in the ratio 3:2.
How much money did each receive?
Step 1
Total number of parts = 3 + 2
Using the ratio 3 : 2 add up the
= 5
numbers to find the total number
of parts.
Step 2
1 part = 90 ÷ 5
Divide the total by the total
= £18
number of parts (step 1) to find
the value of 1 part.
3 : 2
Multiply each side of the ratio by
3 x 18 : 2 x 18
the value found in Step 2.
£54 : £36
Step 4
£54 + £36 = £90
CHECK: add the answers to get
back to the total.
Lauren received £54 and Sean received £36
35
L Watson 2012
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