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on wednesday karla ran 3 miles less than on monday. on friday she ran twice as far as she ran on wednesday. if she ran 21 miles altogether how far did she run on friday

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Mirandawolfaj

Answer:

Karla ran 9 miles on Friday

Step-by-step explanation:

lets make # miles Karla ran on monday=x

wednesday= x-3

Friday= 2(x-3)

since total miles= 21,

2(x-3)+x-3+x=21

2x-6+2x-3=21

4x-9=21

4x=30

x= 7.5

2(7.5-3)= 2(4.5)= 9

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