Mathematics, 17.12.2020 21:00, savageyvens

Marlon runs on a driveway which is 1/12 of a mile long. How many times does Marlon run the length of the driveway to complete his daily goal of 1 1/2 miles? A) 18
B) 12
C) 1 7/12
D) 1 1/24

Answers: 2

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answered: cyni

We wish to know how much faster Grant rows than Arianna.

d=G-A and we want our answer is miles/hour so

d=(6mi/36min)(60min/hr)-(3520yd/20min)(mi/1760yd)(60min/hr)

d=10mph-6mph

d=4mph

So Grant rows 4 miles per hour faster than Arianna.

jd3sp4o0y and 4 more users found this answer helpful

THANKS

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ElizaBeth0915 avatar

THANKYOU SO MUCH

irspow avatar

Yeah, a lot of people have a little trouble with conversion problems, but they are very simply once you grasp the idea of using unit labels. You set up multiplications of ratios so that you cancel units that you do not want and introduce those that you do...units cancel just like numbers :P

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