Let's say we're given this question:
Divide £108 in the ratio 4:5.
So, we now add 4 to 5.
4 + 5 = 9.
Now we divide 108 by 9.
108/9 = 12.
Ok, so one unit is 12. We now multiply 4 by 12...
4 x 12 = 48
...And 5 by 12.
5 x 12 = 60
So now we put these into the ratio:
48 : 60
The original question was in pounds, so we add the units:
£48 : £60
And that's our final answer! This is also useful for sharing out money to avoid fights... Test your knowledge on this topic with a quick quiz:

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