natalieghilburn natalieghilburn

28-10-2021
Mathematics

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Mariah runs a minimum of 25 miles a week to prepare for the 5k in Oklahoma City next Spring Break. She runs an equal amount on Tuesday and Thursday and 3 times that amount on Saturday. What is the least she must run on Tuesday?

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elphantowlgirl elphantowlgirl

28-10-2021

Answer:

5 miles

Step-by-step explanation:

Set it up in terms of x. She'll run x miles on Tuesday, x miles on Thursday, and 3x miles on Saturday. If she runs 25 miles in a week (even though she can run more, we're only concerned with minimums in this problem), then 25 = x + x + 3x. This can be simplified down into 25 = 5x. All you need to do here is isolate x by dividing both sides by 5 to get x = 5. Don't forget your units! (:

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