The cost, in dollars, for an appliance repair at a certain company is 1.2p + 20h

游客2025-02-24 40

问题 The cost, in dollars, for an appliance repair at a certain company is 1.2p + 20h, where p is the wholesale price of the parts, in dollars, and h is the number of hours it takes to repair the appliance. What is the cost of repairing an appliance if the wholesale price of the parts is $15 and it takes 2 hours to repair it?

选项 A、$12
B、$18
C、$20
D、$40
E、$58

答案 E

解析某公司一设备的修理成本，以美元计，为1.2p+20h，其中p是零件的批发价格(以美元计)，h是修理设备所用的小时数。如果零件的批发价是15美元，并且花了2小时修理，那么修理这个设备的成本是多少?
解：本题的正确答案为(E)。解答该题时，只要把数据代入题中所给的公式即可：1.2×15+2×20=58

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The cost, in dollars, for an appliance repair at a certain company is 1.2p + 20h

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Afterastorehadsoldktelevisionsetsforpdollarseach,itreducedthepric

Thebuyerofacertainmechanicaltoymustchoose2of4optionalmotionsand4

Atime-studyspecialisthassettheproductionrateforeachworkeronacertain

Inacertaintwo-digitnumber,theunits’digitistwicethetens’digit.Colum

[img]ct_gre6image012[/img]In1969whatwastheratioofdollarsofdomesticope

Acompanypaid$500,000inmeritraisestoemployeeswhoseperformanceswererat

Acertainrectanglehasperimeter54.Iftheratioofthelengthoftherectangl

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