There are between 78 and 107 marbles in a container. The marbles can be shared equally among 9 or 10 children. What is the greatest possible number of marbles in the container?
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
Lowest common multiple of 9 and 10 = 90
Multiples of 90: 90
Greatest possible number of marbles = 90
Answer(s): 90
