Mathematics, 25.07.2019 17:00, friendsalwaysbae

Mary is driving home from work and needs to make two stops. she first drives at a rate of 25 mph to the supermarket, which is 175 miles way from her work, and then she drives to her house, which is 80 miles away from the supermarket, at a rate of 40 mph. what was mary's average speed for the entire trip?

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Mary is driving home from work and needs to make two stops. she first drives at a rate of 25 mph to...