faraz1998
Michael can wash and detail his car in 3 hours, and Jeanne can wash and detail her car in 5 hours. If they work together, how long will it take them to wash and detail both cars?
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faraz1998
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These are the answers:
3 5/8 hour
3 3/4 hour
3 5/7 hour
4 hour
faraz1998
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Whic his the answer?
faraz1998
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So is it A B C or D. ..?
faraz1998
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15/8 ... That isnt one of the choices
faraz1998
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A B C OR D does not consist of that?
coolmath977
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in one hour, michael can wash and detail 1/3 of the car, whereas jeanne only does 1/5 of the car. add them up and its 8/15. 1/8/15=15/8
the answer is 15/8 hours
faraz1998
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yes i do. It is 2 1/8 but that isnt one of the answers?
faraz1998
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The choices are
3 5/8 hour
3 3/4 hour
3 5/7 hour
4 hour
faraz1998
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my bad 1 1/8 hr
coolmath977
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1 7/8
faraz1998
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these r the choices :
3 5/8 hour
3 3/4 hour
3 5/7 hour
4 hour
coolmath977
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yea
faraz1998
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Man.. i see.. dangg it. Thank you Hero and Coolmath977
coolmath977
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cuz the fastest guy takes 3 hrs on his own
faraz1998
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So i dont know what to pick?
coolmath977
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and tell your teachher
sauravshakya
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opps 30/8
sauravshakya
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because they need to wash and detail both cars means they need to wash and detail 2 cars
sauravshakya
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right?
faraz1998
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So then the answer is D
sauravshakya
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I think I did @Hero
faraz1998
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So would the answer be D?
sauravshakya
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It is sure that they will take more than 3 hours
sauravshakya
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cause they need to wash and detail both cars
Kaederfds
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3 3/4 hour
sauravshakya
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Fine.... I may be wrong...... where am I wrong?
coolmath977
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oh right@Hero they need to detail two cars. So one car should be 1 7/8 and two cars would be 3 3/4
sauravshakya
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Ya thats the right answer @Kaederfds
coolmath977
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If its one car it would be 1 7/8
sauravshakya
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@Hero read the question very very very carefully
sauravshakya
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PLZ
coolmath977
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in the end they mentioned "both cars"
coolmath977
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Hero could you help me with my question