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Tom drives a truck. His regular trip is a distance of 280 km. He drives at an average speed of 80 km/h. For safety reasons Tom’s boss puts a speed limiter on his truck. This reduces Tom’s average speed by 10 km/h. How much longer will it take Tom to drive his regular trip?

Respuesta :

texaschic101
time = distance / speed

before the speed limiter :
t = d/s
t = 280/80
t = 3.5 hrs

after the speed limiter : reduced by 10....80 - 10 = 70
t = d/s
t = 280/70
t = 4 hrs

with the speed limiter, it would take Tom 0.5 hrs longer....or 1/2 an hr longer....or 30 minutes longer

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