|
Question 318494: In a class, 2/5 of the boys wear glasses and 1/3 of the girls wear glasses. If the ratio of boys to girls is 10:3, what is the fraction of the class wear glasses?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! In a class, 2/5 of the boys wear glasses and 1/3 of the girls wear glasses. If the ratio of boys to girls is 10:3, what is the fraction of the class wear glasses?
----------------------
Let 10x be the number of boys
Then 3x is the number of girls
----------------------------
Glass wearers:
(2/5)10x + (1/3)3x = 4x+x = 5x
-----------------------------------
# of students in the class is 10x + 3x = 13x
------------------------
Fraction of glass wearers = 5x/13x = 5/13
===========================================
Cheers,
Stan H.
=================
|
|
|
| |
