Answer: a. 1, 3, 5, 15
Explanation:
If he needs to put an equal number of tulips in each vase he uses, the number of vases will have to be multiples of 15.
The multiples of 15 are;
1, 3, 5, and 15.
James can therefore put;
- 1 tulip in 15 vases
- 3 tulips in 5 vases
- 5 tulips in 3 vases
- 15 tulips in 1 vase