let the time taken by the eastbound plane until they meet be t hrs
let the time taken by the westbound plane until they meet be t-1/2 hrs
distance covered by the easbound plane = 700t
distance covered by the westbound plane = 750(t - 1/2)
700t + 750(t-1/2) = 3420
700t + 750t - 375 = 3420
1450t = 3795
t = 2.617 hrs
= appr 2 hours and 37 minutes
a plane leaves Vancouver headed for Toronto of a speed of 700 km/hr. Half an hour later a planes leaves toronto headed to vancouver travelling at a spped of 750 km/hr. the distance between vancouver and toronto is 3420 kn. How long after the plane leaves vancouver will it pass the other plane in the air?
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