yazthespaz
y varies jointly with p and q. When p = 4 and q = 5, y = 60. Find y when p = 5 and q = 8.



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yazthespaz
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@Brittni0605 could you help me if your not busy? Thank You!

Brittni0605
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Hmm, gimme a sec plz

yazthespaz
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OKay thaks

mark_o.
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y varies jointly with p and q.
the formula would be
y=kpq
60=k(4)5 solve for k then Find y when p = 5 and q = 8.

mark_o.
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can you do the next step?

Brittni0605
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@yazthespaz , you can follow @mark_o. I need a few min, sorry

yazthespaz
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y= k(5)(8)= 40
so the answer is y = k (40)

yazthespaz
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which will equal y = 40

yazthespaz
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@Brittni0605 okay, its fine

mark_o.
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yes correct but did you do how to solve for k earlier

mark_o.
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.60=k(4)5

yazthespaz
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yes thanks

mark_o.
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60=k(4)5
60=k(20) so
60/20=k
k=__?
ok good luck now
it seems you got now the correct answer... :D