Question

The 8th-grade class has 31 students. The number of boys in the class is eight less than twice the number of girls. Find the number of girls and the number of boys in 8th grade. ​

Answer 1

13 girls

18 boys

Explanation:

g+b=31

b=2g-8

g+(2g-8)=31

3g-8=31

3g=39

g=13

b=2(13)-8; b=18