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# Ratio - Math watch

1. Water in a swimming pool is treated with two chemicals
mixed in the ratio of 5 : 4. The total volume of the
chemicals is 48 litres. How much of each chemical is used?
2. (Original post by fatimaa.096)
Water in a swimming pool is treated with two chemicals
mixed in the ratio of 5 : 4. The total volume of the
chemicals is 48 litres. How much of each chemical is used?
Do you need help on it - if so, should I start you off?
3. (Original post by fatimaa.096)
Water in a swimming pool is treated with two chemicals
mixed in the ratio of 5 : 4. The total volume of the
chemicals is 48 litres. How much of each chemical is used?
5 shares + 4 shares = 9 shares
So there are 9 total shares of volume which make 48 litres.
You can use this to find out how much 1 share is:
Spoiler:
Show

9 shares = 48 litres
1 share = 48 / 9 = 5.33333... litres

One chemical has 5 shares:
Spoiler:
Show

Volume = 5 x 3.333333... = 26.6666... litres

The other chemical has 4 shares:
Spoiler:
Show

Volume = 4 x 5.3333333... = 21.333333... litres

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