The average price of three mugs is $4. One of the mugs costs $p and another mug costs $3. Express the price of the third mug in terms of p.

Question

The average price of three mugs is $4. One of the mugs costs $p and another mug costs $3. Express the price of the third mug in terms of p.

Answer 1

let mug 1 be $p, mug 2 = $3 and mug 3 = x$

 

So the average would be (p+3+x)/3 = average = 4      cross multiply to get

 

P+3+x = 12     solve for x and get

 

x = 9-p dollars.

 

Hope this helped.