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26-09-2019
Mathematics

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Mary runs M miles a day. Timothy runs twice as many as Mary. Altogether, they run 18 miles each day. How many miles does Mary run each day?

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30-09-2019

Answer: Mary runs 6 miles each day

Step-by-step explanation:

1. Mary=M

Timothy=2M

2. M+2M=18

3. 3M=18

4. M=6

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