gianni uses these instructions to make a fizzy drink, Mix 5 parts of lime juice with 3 parts of lemonade, gianni thinks that he has 400ml of lime juice and 300 ml of lemonade
a) if Gianni is correct what is the greatest amount of fizzy drink he can make?

Gianni has 400ml of lime juice but he only has 280ml of lemonade
b) after making the greatest amount of fizzy drink he could, what is the amount of lemonade left over?