Asked by Emiko
There are 12 boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio of boys to girls to remain the same?
Answers
Answered by
CellLover727
What do you think?
I'll give you a hint: whenever you add something to one side, in order to keep the difference equal youuuuuu-?
I'll give you a hint: whenever you add something to one side, in order to keep the difference equal youuuuuu-?
Answered by
greg
find the common ratio e.g if they gave 20:10 the ration would be 10:5
Answered by
oogieoogie
turn the ratios into fractions
12 over 10 & 18 over x
cross multiply
10 x 18 = 180
divide 180 by 12.
180 / 12 = 15
check to make sure they are equivalent
15 - 10 = 5
answer: 5 girls would need to join the class.
12 over 10 & 18 over x
cross multiply
10 x 18 = 180
divide 180 by 12.
180 / 12 = 15
check to make sure they are equivalent
15 - 10 = 5
answer: 5 girls would need to join the class.
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