Question

The Key Club has 35 members. There are three more girls than boys. Write and solve a system of

linear equations to find how many girls are in the club.

Answer 1

Answer: 19 girls

16 boys

Explanation:

x -girls

y- boys

Lets set system of liner equations:

x+y=35

y=x-3

-----------------

x+(x-3)=35

2x-3=35

2x=38

x=38/2

x=19

19 girls

y=x-3

y=19-3

y=16

16 boys

Answer 2

19 girls

Explanation:

Since there are 3 more girls than boys, 35-3=32

32/2=16

Now add back the 3

16+3=19