Wendy has more than 70 but less than 80 sweets. If she puts them equally into packets of 9, she would be short of 6 sweets. If she puts them equally into packets of 7, she would have 5 extra sweets. How many sweets does Wendy have?
Multiples of 9: 54, 63, 72, 81, 90
Multiples of 9 (-6): 48, 57, 66, 75, 84
Multiples of 7: 56, 63, 70, 77, 84
Multiples of 7 (+5): 61, 68, 75, 82, 89
Common number more than 70 but less than 80: 75
Number of sweets that Wendy has = 75
Answer(s): 75
