SOLUTION: The number of girls and boys in the class are
proportional to 1.2 and 1.4 . If the number of
students is between 66 and 80, then find the
number of boys in the class?
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proportional to 1.2 and 1.4 . If the number of
students is between 66 and 80, then find the
number of boys in the class?
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Question 964359: The number of girls and boys in the class are
proportional to 1.2 and 1.4 . If the number of
students is between 66 and 80, then find the
number of boys in the class? Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 1.2:1.4=6:7
6+7=13 FOR EVERY 6 BOYS THERE ARE 7 GIRLS.
THEREFORE THERE HAS TO BE GROUPS OF 13 IN THE CLASS.
66/13=5.07
5*13=65 TOO SMALL.
80/13=6.15
6*13=78 WITHIN LIMITS GIVEN.
6*6=36 BOYS.
7*6=42 GIRLS.
36+42=78
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