SOLUTION: The number Of Boys in a math c\lass is one less than three times the number of girls. There are 39 students in the clas . How many of each are there in the class.

Question 187792: The number Of Boys in a math c\lass is one less than three times the number of girls. There are 39 students in the clas . How many of each are there in the class.
Found 2 solutions by user_dude2008, nerdybill:
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
b = # boys, g = # girls

" number Of Boys in a math c\lass is one less than three times the number of girls" ----> b=3g-1

"There are 39 students in the clas " ----> b+g=39

So solve system

to find the answer
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
.
Let g = number of girls
then
3g-1 = number of boys
.
g + 3g-1 = 39
4g-1 = 39
4g = 40
g = 10 (number of girls)
.
number of boys:
3g-1 = 3(10)-1 = 30-1 = 29 (number of boys)

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