louistwdg
11.07.2019 •
Mathematics
Kristina recently hired a contractor to do some necessary work. on the final bill, kristina was charged a total of $765. $405 was listed for parts and the rest for labor. if the hourly rate for labor was $80, how many hours of labor was needed to complete the job?
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Ответ:
405 + 80t = 765
80t = 360
t = 4.5
It took the laborer 4.5 hours
Ответ: