Mathematics
Mathematics, 28.01.2021 01:00, ladybugys

Eric's mother drives to work in 20 minutes when driving at her usual speed. When traffic is bad, she drives 10 miles per hour slower, and the trip takes 10 minutes longer. What is Eric's mother's usual speed

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Eric's mother drives to work in 20 minutes when driving at her usual speed. When traffic is bad, she...

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