Fiona has a job at a garage.
She needs to prepare a paint mix to spray on a car.
Fiona needs to blend colour with a hardener and a reducer in the ratio 8:1:1
She needs to make 3.5 litres of the paint mix.
Fiona has 2.9 litres of colour.
Does Fiona have enough colour to make 3.5 litres of paint mix?

Yes.

8 + 1 + 1 = 10, so there are 10 parts to the ratio.
3.5 litres divided by 10 would mean that each part of the ratio is worth 0.35 litres.
The colour is worth 8 parts of the ratio. 0.35 litres multiplied by 8 would give 2.8 litres, meaning 2.8 litres of colour are required.
Fiona has 2.9 litres of colour, which is more than enough to make 3.5 litres of paint mix.

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Fiona has a job at a garage. She needs to prepare a paint mix to spray on a car. Fiona needs to blend colour with a hardener and a reducer in the ratio 8:1:1 She needs to make 3.5 litres of the paint mix. Fiona has 2.9 litres of colour. Does Fiona have enough colour to make 3.5 litres of paint mix?

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Fiona has a job at a garage.
She needs to prepare a paint mix to spray on a car.
Fiona needs to blend colour with a hardener and a reducer in the ratio 8:1:1
She needs to make 3.5 litres of the paint mix.
Fiona has 2.9 litres of colour.
Does Fiona have enough colour to make 3.5 litres of paint mix?