1. Kevin is John's father. Kevin is 51 years old. Three yearsago, Kevin was four times as old as his son was then. Howold is John now?Robin and Batman have to stuff and mail 1000 envelopesfor a new marketing campaign. Batman can do the job alonein 3.5 hours. If Robin helps, they can get the job done in 4hours. How long would it take Robin to the job by himself?2.

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Answered: Kevin is John's father. Kevin is 51…

PREALGEBRA

15th Edition

ISBN:9781938168994

Author:OpenStax

Publisher:OpenStax

Chapter5: Decimals

Section5.6: Ratios And Rate

Problem 486E: The parking lot at the airport charges $0.75 for every 15 minutes. (a) How much does it cost to park...

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Sue and Daves semicircular driveway is to be resealed, and then flowers are to be planted on either side. Give approximate answers. aWhat is the number of square feet to be resealed? bIf Dave can reseal the driveway at a cost of 0.45 per square feet, what is the cost of resealing the driveway? cIf individual flowers are to be planted 1 foot from the edge of the driveway at intervals of approximately 1 foot on both sides of the driveway, how many flowers are needed?
The parking lot at the airport charges $0.75 for every 15 minutes. (a) How much does it cost to park for 1 hour? (b) Explain how you got your answer to part (a). Was your reasoning based on the unit cost or did you use another method?
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Kevin is John's father. Kevin is 51 years old. Three yea ago, Kevin was four times as old as his son was then. Ho old is John now? 1.