#1 is b and #2 is also b ,, i think..so sorry if i’m wrong!
Find the LCD (least common denominator)

it would be 12 (6x2=12 and 4x3=12)
so you multiply

by 2 and get

then multiply

by 3 and get

you get 3 WHOLE servings from

cups of icecream
This is a proportion problem. Start by doing:
2/3 = x/52.20
Multiply both sides by 52.20
X= 34.8 this is how much the son paid
Now add 34.8 + 52.20
Answer is 87