Elizabeth has decided that it’s time for a change and wants to re-decorate some of the rooms in her house.
At the DIY store there is a special offer on paint.
White paint costs £2.80 per litre and blue paint costs £3.50 per litre.
For the colour that Elizabeth has chosen white paint and blue paint are mixed in the ratio 3: 2.
Work out the cost of 18 litres of the mixture.
Answer:
18/5 = 3.6
Required amount of each colour:
White paint = 3 x 3.6 = 10.8
Blue paint = 2 x 3.6 = 7.2
Therefore cost:
White paint = 10.8 x 2.80 = 30.24
Blue paint = 7.2 x 3.50 = 25.2
Total cost = £55.44