SOLUTION: a math club has 40 members. the number of girls is 5 less than 2 times the number of boys. how many members are boys? how many members are girls? equation 1: equation 2:

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: a math club has 40 members. the number of girls is 5 less than 2 times the number of boys. how many members are boys? how many members are girls? equation 1: equation 2:      Log On


   

Question 926528: a math club has 40 members. the number of girls is 5 less than 2 times the number of boys. how many members are boys? how many members are girls?
equation 1:
equation 2:
Found 2 solutions by stanbon, MathLover1:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a math club has 40 members. the number of girls is 5 less than 2 times the number of boys. how many members are boys? how many members are girls?
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Members equation: b + g = 40 members
Girls equation:: g = 2b - 5
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Substitute for "g" and solve for "b":
40-b = 2b - 5
3b = 45
b = 15 (# of boys)
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g = 2b-5 = 25 (# of girls)
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Cheers,
Stan H.
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Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

a math club has 40 members.
the number of girls g is 5 less than 2 times the number of boys b
how many members are boys

equation
1:b%2Bg=40
2:g=2b-5...substitute in 1
b%2B2b-5=40
3b=40%2B5
3b=45
b=45%2F3
b=15 members are boys
then
b%2Bg=40
g=40-15
g=25 members are girls