Nora has more than 60 but less than 70 mochi balls. If she puts them equally into packets of 10, she would be short of 7 mochi balls. If she puts them equally into packets of 5, she would have 3 extra mochi balls. How many mochi balls does Nora have?
Multiples of 10: 50, 60, 70
Multiples of 10 (-7): 43, 53, 63
Multiples of 5: 45, 50, 55, 60, 65, 70, 75
Multiples of 5 (+3): 48, 53, 58, 63, 68, 73, 78
Common number more than 60 but less than 70: 63
Number of mochi balls that Nora has = 63
Answer(s): 63
