Question 893801
Distance = rate x time
d = rt


One train:
distance = d
rate = 30
time = t
d = 30t {distance = rate x time}


Other train:
distance = d
rate = 45
time = t
d = 45t {distance = rate x time}


30t + 45t = 100 {the combined distance of the two trains, when they meet, is 100}
75t = 100 {combined like terms}
t = 1  1/3 hours


In 1 hour and 20 minutes they will meet
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