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

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) (Show Source): You can put this solution on YOUR website!
x + y = 49
x is boys, y is girls
y = x
...
Substitute
x + x = 49
Multiply the entire equation by 5 to remove the fraction
5x + 2x = 245
7x = 245
boys
y = 49 - 35 = girls
.....................
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