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I do not understand this question... Could somebody please explain?

I do not understand this question... Could somebody please explain?-example-1
User Undone
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1 Answer

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students to student assistants

3rd period is 85:5
fractionify and simplify
85/5=17/1
17:1

7th period is 51:3
51:3
51/3
17/1
17:1

if they are proportional, then they are equal when simplified

17:1 is 3rd period
17:1 is 7th period
they are equall

they are poropoertional
User Mortalis
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