We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
+2
167
2
avatar+42 

For each plumbing repair job, Mr. Wrench charges \(N\) dollars for coming out to the house plus \(x\) dollars per hour that he works at the house. He charged \(\$97\) for a one-hour repair job and \(\$265\) for a five-hour repair job. What is his charge for a two-hour repair job?

 

Thanks in advance for the help /ᐠ。ꞈ。ᐟ\

 Apr 4, 2019
edited by detkitten  Apr 4, 2019
 #1
avatar+6042 
+2

\(N+1x = 97\\ N+5x = 265\)

 

\(\text{Subtract eq 1 from eq 2}\\ 4x = 168\\ x = \$42\\ N = 97-x = 97-42 = \$55\)

.
 Apr 4, 2019
 #2
avatar+42 
+2

Thanks! ᐠ。ꞈ。ᐟ✿\

detkitten  Apr 4, 2019

5 Online Users