Answer:
63
Step-by-step explanation:
21 x 3 = 63 which is your answer
Answer:
Katy made 63 cupcakes total
Step-by-step explanation:
21 x 3 = 63
this is because if maria has 21 and Katy has 3 x the number of Maria's cupcakes, Katy would have 63 cupcakes.