Carroll High School has a total of 94 boys and girls who play sports. If the number of boys is 9 more than four times the number of girls, how many boys play sports at this high school?

17 23 77 92

77

92

Question

Carroll High School has a total of 94 boys and girls who play sports. If the number of boys is 9 more than four times the number of girls, how many boys play sports at this high school?

 17 23 77 92

 

 77

 92

anonymous · Answer

say a1= number of boys
a2= number of girls
a1=$$4*a2+9$$
a1+a2 =94
$$5*a2+9 = 94$$
a2=$$85/5$$
a2 =17 (number of girls)
a1 = 77 (number of boys)