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28 September, 16:57

Lisa is training for a marathon. She needs to run 10 miles by the end of the week. She ran 2.7 miles on Monday and 3.65 miles on Wednesday. How many more miles does she need to run on Friday?

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  1. 28 September, 17:20
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    Lisa needs to run 3.65 miles on Friday to complete a 10 miles marathon.

    Step-by-step explanation:

    Total distance to be run in the marathon in a week = 10 miles

    Distance covered on Monday = 2. 7 miles

    Distance covered by Lisa on Wednesday = 3.65 miles

    Let us assume Lisa runs k miles on Friday to complete the marathon.

    The, according to the question:

    Distance covered on (Monday + Wednesday + Friday) = Total Distance

    ⇒ 2. 7 miles + 3.65 miles + k miles = 10 miles

    or, 6. 35 miles + k miles = 10 miles

    ⇒ k = (10 - 6. 35) miles = 3.65 miles

    or, k = 3.65 miles

    Hence, Lisa needs to run 3.65 miles on Friday to complete a 10 miles marathon.
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