The ratio of boys to girls at a party is 3: 5
2 boys leave the party
the ratio of boys to girls is now 5: 9
work out the number of girls at the party. show full working.

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?