If 3 litres of paint cost £9.90, how much will 5 litres of paint cost?

1 Answer
Aug 24, 2017

#16.50# pounds

Explanation:

If three litres of paint cost #9.90# pounds then one litre of paint costs #3.30# pounds because #9.90/3=3.30#.

So if we take the price of three litres and add two more litres then we'll get the price of #5# litres.

#9.90+2(3.30)->9.90+6.60=16.50# pounds