Answer :
122.57x4=490.28 is Janette 555.28-490.28=$65 for installation.
Monique 136.71x4=546.84
585.34-546.84=$39 for installation
65-39=$26 is the answer
Monique 136.71x4=546.84
585.34-546.84=$39 for installation
65-39=$26 is the answer