SOLUTION: At 9am a truck leaves the truck yard and travels west at a rate of 45 mi/hr. Two hours later, a second truck leaves along the same route, traveling at 75 mi./hr/ When will the se

Question 96906: At 9am a truck leaves the truck yard and travels west at a rate of 45 mi/hr. Two hours later, a second truck leaves along the same route, traveling at 75 mi./hr/ When will the second truck catch up to the first?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
At 9am a truck leaves the truck yard and travels west at a rate of 45 mi/hr. Two hours later, a second truck leaves along the same route, traveling at 75 mi./hr/ When will the second truck catch up to the first?
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1st truck DATA:
Rate = 45 mph ; time = x hrs ; distance = 45x miles
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2nd truck DATA:
Rate = 75 mph ; time = x-2 hrs ; distance = 75(x-2) = 75x-150 miles
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EQUTION:
distance = distance
45x = 75x-150
30x = 150
x = 5 hrs
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2nd truck will catch 1st 5 hrs after 9:00AM or at 2:00PM
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Cheers,
Stan H.
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