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For some maintenance work, an electrician charged $288 for labor and parts. The labor charge was $40 per hour, and the total charge for labor was 5 times the charge for parts. How many hours of labor did the electrician charge for the work?
_____hours
_____hours
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· 相关考点
3.3.1 解一元一次方程与相关应用题
3.3.1 解一元一次方程与相关应用题
以上解析由 考满分老师提供。
