shifaithtru04ov48sa shifaithtru04ov48sa

23-08-2017
Mathematics

contestada

the ratio of boys to girls at a movie is 4:7 if there are 21 girls how many boys are at the movie

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Peredhel Peredhel

23-08-2017

Hi!

4:7
x:21

21/7 = 3
4 · 3 = 12

4:7
12:21

There are 12 boys at the movie.

Hope this helps! :)

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gabbycastle gabbycastle

23-08-2017

If ratios aren't a strong thing for you, make it into a fraction and compare it that way.

4/7 = _/21

21 divided by 7 = 3

So, 3 times 4 = _

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