一个木工加工木料,每一个小时要花费15分钟去磨刨刀和修理工具,他真正加工材料所用时间占总劳动时间的百分比是多少?
2023-06-11
A. 65%
B. 70%
C. 75%
D. 80%
参考答案:C
B. 70%
C. 75%
D. 80%
参考答案:C
(60-15)÷60=75%。故答案为C。
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2023-06-11
(60-15)÷60=75%。故答案为C。
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