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15 Jul 2018, 07:23
00:00

Difficulty:

15% (low)

Question Stats:

88% (00:47) correct 12% (02:04) wrong based on 25 sessions

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Marie earned $0.75 for every mile she walked in a charity walkathon. If she earned a total of$18.00 at that rate, how many miles did she walk?

A. 13.5
B. 17.5
C. 21
D. 22.5
E. 24

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Re: Marie earned $0.75 for every mile she walked in a charity walkathon. [#permalink] Show Tags 15 Jul 2018, 10:44 Bunuel wrote: Marie earned$0.75 for every mile she walked in a charity walkathon. If she earned a total of $18.00 at that rate, how many miles did she walk? A. 13.5 B. 17.5 C. 21 D. 22.5 E. 24 Note : 0.75 / mile. Total earning = 18$

Let the number of miles be x.

0.75x = 18

x = 18/ 0.75

x = 18 / (75/100)

x = 18* (4/3)

x = 24.

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16 Jul 2018, 09:47
Bunuel wrote:
Marie earned $0.75 for every mile she walked in a charity walkathon. If she earned a total of$18.00 at that rate, how many miles did she walk?

A. 13.5
B. 17.5
C. 21
D. 22.5
E. 24

Marie earned $0.75 for every 1 mile. Her total earning -$18

Hence, the miles she walked = 18/0.75 = 18*100/75 = 24 miles

Thanks,
GyM
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Re: Marie earned $0.75 for every mile she walked in a charity walkathon. [#permalink] Show Tags 19 Jul 2018, 11:35 Bunuel wrote: Marie earned$0.75 for every mile she walked in a charity walkathon. If she earned a total of $18.00 at that rate, how many miles did she walk? A. 13.5 B. 17.5 C. 21 D. 22.5 E. 24 Marie walked a total of 18/(0.75) = 24 miles. Alternate Solution: We are given that Marie earns$0.75 PER MILE. Since rate x miles = total dollars, we can create the following equation to determine the number of miles walked.

0.75 x miles = 18

miles = 18/0.75

miles = 18/(3/4)

miles = 18 x 4/3 = 24

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