To make 5 apple pies, you need about 2 pounds of apples. how many pounds of apples do you need to make 20 apple pies?

About 8 pounds of apples is needed for 20 pies
 20 divided by five is 4 so you have to multiply 2 times 4 

8 lbs. We have 2 lbs for every 5 pies so the first step is to find out how many sets of 5 we have. We find this out by dividing 20 by 5. 20 divided by 5 is 4, so we have 4 sets of 5. If for every one set, we need 2 lbs of apples, we need to multiply the number of sets by 2. 4*2 is 8, so 8 is our final answer.