Question

Which three group of Andreas relatives makes up 75% of her guests?

12 cousins
6 aunts
4 brothers
2 sisters

Explain how you figured it out

Answer 1

First you need to find out how many guests Andrea has. Do this by adding the number of these relatives. 12+6+4+2=24
75% of 24 is 18, so the three groups must equal 18.
12+4=16. 16+2=18
So the groups are the cousins, brothers, and sisters.