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Mathematics, 30.10.2020 19:30 kennakenken3

In a 10-kilometer race, runners record times (in minutes;seconds) of 30:44 , 29:33, 31:22, 29:11, & 28:51. What is the difference between the slowest & fastest of these times?

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In a 10-kilometer race, runners record times (in minutes;seconds) of 30:44 , 29:33, 31:22, 29:11, &a...
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