SOLUTION: At 9:00 a.m. 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 55 mi/hr. When will the
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Question 177701: At 9:00 a.m. 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 55 mi/hr. When will the second truck catch up to the first? Answer by kollanag(3) (Show Source):
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1st truck travels at s1 = u1 + v1t1
for 2nd truck s2 = u2+ v2t2
t1 = t2 + 2
s1 = s2
u1 and u2 are zeros.
so
45t1 = 55t1 - 110
==> t1 = 11 hr.
so at the time of 8 PM they will meet.
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