After eating 2 packs of crackers, Miriam's uncle will bring 120 cans of juice and 88 packs of crackers for picnic. Now we need to find greatest common divisor for 120 and 88.
120 88 | 2
60 44 | 2
30 22 | 2
15 11
2*2*2=8 which means that maximum number of students who can share the food equally is 8. Each student will get 120/8=15 cans of juice and 88/8=11 packs of crackers.