Gabby had some shirts that she wanted to donate. 3 of them were torn and she had to throw them away. She then packed them equally into boxes. Each box could either contain 9 or 10 shirts. What is the smallest possible number of shirts Gabby had at first?
To be able to pack the remaining shirts into boxes of 9 or 10 shirts, the number of remaining shirts must be divisible by 9 or 10.
Multiples of 9: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90
Multiples of 10: 10, 20, 30, 40, 50, 60, 70, 80, 90
LCM of 9 and 10: 90
Smallest possible number of shirts
= 90 + 3
= 93
Answer(s): 93
