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OpenStudy (i_ask_alot):
I need help with 7th Grade Math I Medal and Fan the first correct answer!!! Please Help.
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OpenStudy (i_ask_alot):
The ratio of girls to boys who participated in the quiz bowl was 7:5. There were 42 girls in the competition. How many boys participated?
OpenStudy (fortytherapper):
Sort everything out. You want to find the number of boys, so let x = boys \[\frac{ Girls }{ Boys} = \frac{ 7 }{ 5 } = \frac{ 42 }{ x}\]
OpenStudy (i_ask_alot):
x= 30?
jhonyy9 (jhonyy9):
how you have got it ?
jhonyy9 (jhonyy9):
cross multiplie and divide both sides by 7 - yes ?
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jhonyy9 (jhonyy9):
7x=5*42 x=5*6 x=30
OpenStudy (fortytherapper):
^ Exactly as he said
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