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Q: A man drives to town 30 miles away at a speed of 45mph and arrives in 40 mins On his return he takes 60 mins What is his average speed for the total trip?

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45mph

11.25 miles

1 mile = 5280 ft 1 hour = 3600 seconds 45mph = 45 x 5280 / 3600 ft/s =66ft/s 420ft / 66ft/s ~= 6.36 seconds

The speed limit the speeds are like 45mph mph stands for miles per hour

420 mi / 45 MPH = 9.33 hr = 9 hr 20 min

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