Answer:
5:10
or if they prefer it simplified 1:2
Explanation:
It asks to write the number of cherry pies sold(5) to the number of apple pies sold (10).
Exactly how it is written is how it should be answered (5:10)
Now if they ask for it to be simplified, we know that five goes into 5 once and twice into 10 thus giving the expression 1:2