1000 tickets were sold. Adult tickets cost $8.50, children's cost $4.50, and a total of $5700 was collected. How many tickets of each kind were sold?​

If i think this is what your asking, he should look at the grams or pounds/ounces and compare the to their cost then max can identify which one is proportional and which is not ( i think xd)

If she spent  3/8 playing games and 50% eating, that would be 4/8. so she would have had to spend 1/8 opening presents