Question #a3e22

2 Answers
Conper
May 8, 2017

4.5 hours or 4 hours and 30 minutes.

Explanation:

750 = 435 +70x

Solve for x.

750- 435 = 70x

315 = 70x

315/70 = x

x = 4.5 hours

Barney V.
May 8, 2017

#color(blue)(4 1/2# hours

Explanation:

Total charge#=$750#
minus part#=underline(-$435)#
Labor#color(white)(aaaaaaaa)##$315#

Hourly rate for labor#=$70#

#:.color(blue)(315/70=4.5# or # color(blue)(4 1/2 # hours labor

check: #color(green)(4.5 xx $70=$315#

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