Question

George has a sports card collection of 250 cards.Of those, 50 cards are football cards. What percentof the cards are football?

Answer 1

Consider the following diagram:

now, by cross-multiplication, this is equivalent to:

`x\text{ (250 cards)=100\%(50cards)}`

solving for x, we obtain:

`x\text{ =}(5000)/(250)=20`

So that, we can conclude that the correct answer is:

20%.