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#31843

distance

word problem

equations

medium

60 sec

A plumber charges $45 per hour for labor. An electrician charges $55 per hour for labor. For a job that took $h_{p}$ hours for the plumber and $h_{e}$ hours for the electrician, the total combined cost for labor was $620. If the total hours worked by both was 13 hours, which system of equations represents this situation?

A.

$45 h_{p} + 55 h_{e} = 620$ AND $h_{p} + h_{e} = 13$

B.

$(50 + 45) h_{p} + (70 + 55) h_{e} = 620$ AND $h_{p} + h_{e} = 13$

C.

$45 h_{p} + 55 h_{e} = 620 - 50 - 70$ AND $h_{p} + h_{e} = 13$

D.

$45 h_{p} + 55 h_{e} = 620$ AND $50 h_{p} + 70 h_{e} = 13$