Question

Last summer, 150 students attended the Apollo Math Camp, of whom 96 were girls and 54 were boys. Also, 68 were 7th graders and 82 were 8th graders. How many 8th-grade boys attended the camp if 40 of the girls were 7th graders?

Answer 1

girls: 96
40 were 7th-graders, leaves 56 8th grade girls
so, of the 82 8th graders, 26 were boys