Question

y varies jointly with p and q. When p = 3 and q = 5, y = 60. Find y when p = 2 and q = 6.

Answer 1

y = 36

y = 48

y = 60

y = 72

Answer 2

"varies jointly"
y = k*p*q
Solve for k using the information in the 2nd problem sentence.
Then you can find y using the 3rd sentence.
Verify that y = 48 yourself.

Answer 3

so is that the complete answer!!?

Answer 4

Yes.
'Find y when p = 2 and q = 6."
y = 48

Answer 5

thank you so much!

Answer 6

http://www.purplemath.com/modules/variatn.htm

Check out the above web site. Pull the slider down a short way. This is one of the web sites that I found from a Google search of "varies jointly"

In your math future you have to deal with "is proportional to", "is inversely proportional to" and so forth.

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Thank you for the medal.