Marion has more than 60 but less than 70 chocolate bars. If she puts them equally into bags of 5, she would be short of 1 chocolate bars. If she puts them equally into bags of 9, she would have 6 extra chocolate bars. How many chocolate bars does Marion have?
Multiples of 5: 50, 55, 60, 65, 70, 75, 80
Multiples of 5 (-1): 49, 54, 59, 64, 69, 74, 79
Multiples of 9: 54, 63, 72, 81
Multiples of 9 (+6): 60, 69, 78, 87
Common number more than 60 but less than 70: 69
Number of chocolate bars that Marion has = 69
Answer(s): 69
