Question

Meg has a can that contains 80% of orange juice and the rest water. the can has 1 liter of water

find the equation

Answer 1

this is 4/5 orange juice and 1/5 water. this means there is 4 times as much orange juice as there is water as 4/5 = 4 * (1/5)
this means that if there is one litre of water then there is four times this of orange juice.
Hope this helps, comment if you need more help to get the answer :)