Cathy has some marbles. If she packs them in bags of 5, she will have 3 extra marbles. If she packs them in bags of 7, she will have 5 extra marbles. What is the minimum number of marbles Cathy has?
Multiples of 5: 5, 10, 15, 20, 25, 30
Multiples of 5 (+3): 8, 13, 18, 23, 28, 33
Multiples of 7: 7, 14, 21, 28
Multiples of 7 (+5): 12, 19, 26, 33
Minimum number of marbles that Cathy has = 33
Answer(s): 33
