Answer: 54 cups of sugar
Explanation:
part A add 3 each time
1=3
2=6
3=9
4=12
5=15
6=18
Part B
1x3 per pie
so if there is 70 pies do 70x3
Part C]
if you do 18 and since you need 3 cups of sugar per pie
do 18 times 3 to get a total of 54 cups of sugar
18x3=54