Can someone help me please I don’t get it

3 = 3
10 = 5*2
Least Common Multiple = 3*5*2 = 30
She needs to buy 30 glue sticks or 3 packages of 10
Answer:
She can buy 30 because
Step-by-step explanation:
3x10=30 and she wants the same amount of each but wants to know what is the fewest glue sticks she can buy to get the same amount of glue sticks