Answer:
Sophie sold 14
Kate sold 24
Step-by-step explanation:
Kate has sold 4 less than twice as many as Sophia.
2s - 4
---------------------
sold a total of 38 tickets
Sophie + Kate = 38
s + (2s - 4) = 38
Combine like terms
3s - 4 = 38
Add 4 to both sides
3s = 42
Divide both sides by 3
s = 14
2s - 4 = 2*14 - 4 = 24