Mathematics
posted by Nono .
A machine takes 4.2 hours to make 7 parts. At that rate, how many parts can the machine make in 28.8 hours
48 parts
41 parts
172 parts
17 parts

48 parts

It might help to see the process.
7/4.2 = p/28.8
Divide both sides by 28.8 and solve. 
The correct answer is 48 parts.xD

48 :)

Yes sasha!