Lucy enjoys cooking and likes to make time to make home cooked meals from scratch.
Lucy has bought a full bottle containing 1 litre of olive oil which has a mass of 1270g.
400ml of the olive oil is used.
The bottle with the remaining olive oil has a mass of 900g.
Calculate the mass of the empty bottle.
1270 – 900 = 370g
This means 400ml of oil has a mass of 370g.
400ml : 370g
Divide both sides by 400 to find the mass of 1ml of oil.
1ml : 0.925g
Multiply both sides by 1000 to find the mass of 1000ml (1 litre) of oil.
1000ml of oil has a mass of 925g.
1270 – 925 = 345g