Question 855784
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Hi,
The ratio of males to females in a race is 7:5.
Let x represent  the constant of proportionality
Question States***there are 144 runners
 7x + 5x = 144
    12x = 144
      x = 12
 84 males and 60 females 
CHECKING our answer***
 80 + 64 = 144
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