Help needed

CRoss

New member
Joined
Sep 14, 2020
Messages
1
I need someone to explain how to get this answer please.975E73D0-3716-4012-9805-66BA0DA14457.jpeg
 
Last edited by a moderator:

Subhotosh Khan

Super Moderator
Staff member
Joined
Jun 18, 2007
Messages
22,083

Dr.Peterson

Elite Member
Joined
Nov 12, 2017
Messages
8,817
I need someone to explain how to get this answer please.
The average cost is the total cost C(x), divided by the number of items, x. Write an equation that says this is 120, and solve.
 

HallsofIvy

Elite Member
Joined
Jan 27, 2012
Messages
6,605
Actually, the problem tells you what the equation for the average cost, not total cost, is. This problem is just a matter of solving the given equation, \(\displaystyle \frac{7377+ 40x}{x}= 120\) for x. I would start by multiplying both sides by x to get \(\displaystyle 7377+ 40x= 120x\) and solve that.
 
Top