As part of their finale, each of the 18 members of a juggling troupe is juggling either six or seven balls. Altogether , the troupe is juggling 120 balls. How many members are juggling exactly seven balk?
when you look at the problem you can see that when it says groups it is also talking about division and groups also means division, so you divide 120 and 18 and it leaves you with 6 for your final answer.
