Math word question???

[Tessa]

Linda and Bill Gomez spent $100 on spruce trees. Some were blue spruce trees priced at $20 each, and the rest were green spruce trees priced at $10 each. How many of each kind of spruce did the Gomezes buy? (Hint: There is more than one solution, but only one of the possible choices is correct.)

the answer can be

1) 2 blue and 4 green spruce
2) 2 blue and 5 green spruce
3) 3 blue and 4 green spruce
4) 4 blue and 3 green spruce


thanks!!!

[punky89]

3 blue and 4 green spruce