SOLUTION: In a class of 49 students, the no. of girls is 2/5 of the boys. Find the no. of boys in the class

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: In a class of 49 students, the no. of girls is 2/5 of the boys. Find the no. of boys in the class      Log On


   

Question 684202: In a class of 49 students, the no. of girls is 2/5 of the boys. Find the no. of boys in the class
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
x + y = 49
x is boys, y is girls
y = 2%2F5x
...
Substitute
x + 2%2F5x = 49
Multiply the entire equation by 5 to remove the fraction
5x + 2x = 245
7x = 245
highlight_green%28x+=+35%29 boys
y = 49 - 35 = highlight_green%28y=14%29 girls
.....................
Have more questions?
Email: HomeworkHelpers@readingboosters.com
Delighted to help.
-Reading Boosters
Website: www.MyHomeworkAnswers.com
Wanting for others what we want for ourselves.