Khan/khan-exercises — Issue #9793: Ratio word problems - JUST CHECK THIS
Author: KhanBugz
Created: 2011-12-29 15:58:23+00:00
State: open
Labels: win7, wrong-or-unclear

Reporter: chinmay.wps@gmail.com

n algebra class, the girl to boy ratio is 4 to
7.

If there are 35 boys, how many girls are there?

A ratio of 4 girls to
7 boys means that there is a group of
4 girls for every group of
7 boys.

If there are 35 boys, then there are
5 groups of
7 boys each.

Because we know the ratio is 4:7, there must be
5 groups of
4 girls each.

There is a total of 20 girls in algebra class.????

hey how could we calculate like that ?
now me..ok 5 groups of girls=20 then ATQuestion 5 groups of boys too=35

20+35=55???? total???

[ratio_word_problems.html?seed=191&problem=classroom-give-boys-ask-girls](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/ratio_word_problems.html?seed=191&problem=classroom-give-boys-ask-girls&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/ratio_word_problems.html?seed=191&problem=classroom-give-boys-ask-girls&debug&activity=%5B%5B%22hint-activity%22%2C%220%22%2C41%5D%2C%5B%22hint-activity%22%2C%220%22%2C43%5D%2C%5B%22hint-activity%22%2C%220%22%2C46%5D%2C%5B%22hint-activity%22%2C%220%22%2C84%5D%5D)

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Opera/9.80 (Windows NT 6.1; U; en) Presto/2.10.229 Version/11.60

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