Problema Solution
plane A leaves Los Angeles for New York at 500 mph, at the same time plane B leaves from New York at 600 mph. Assume the distance from Los Angeles to New York is 3000 miles. Find out how long it will take them to meet.
Answer provided by our tutors
let
v1 = 500 mph the speed of plane A
v2 = 600 mph the speed of plane B
d = 3000 mi the distance between LA and NY
t = the time of the flight
since distance = speed*time and the planes are flying one toward the other we have:
v1t + v2t = d
500t + 600t = 3000
by solving we find:
t = 30/11 hr
t = 2 hr 8*60/11 min
t = 2 hr 44 min
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it will take them 2 hr 44 min till they meet.