If you can buy 3 lbs of apples for $7.20, how many pounds of apples can you buy if you have $12.00?
You can buy 5 lbs of apples for $12.00
We can solve this by writing the ratio:
3 is to 7.20 as x is to 12.00 or 3:7.20 -> x:12.00
Writing this as an equation gives:
We can solve for