Problema Solution
you have three times as many cards as your friend. he says you only have 80 more than him. How many do you each have?
Answer provided by our tutors
let 'x' represent the number of cards your friend has, then '3x' represent the number of cards you have:
3x-x = 80
2x = 80
x = 80/2 = 40
your friend has 40 cards, you have 120 cards