Problema Solution
A jet plane, flying 100 mph faster than a propeller plane, travels 6300 miles in 4 hours less time than the propeller plane takes to fly the same distance. How fast does each plane fly?
Answer provided by our tutors
let 'v' represent the speed of the propeller plane, then 'v+100' represents the speed of the jet plane
let 't' represent the time taken by the jet, then 't+4' represents the time taken by the propeller plane
distance = speed * rate
6300 = v(t+4) = vt + 4v
6300 = t(v+100) = vt + 100t
solving this system we have:
v = 350
t = 14
350+100 = 450
the propeller plane flies at 350 mph, the jet flies at 450 mph