SOLUTION: It takes a small jet plane 4 hours less time than it takes a propeller-driven plane to travel from Glen Rock to Qakville. The jet averages 637 km/h while the propeller plane ave

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Question 716776:
It takes a small jet plane 4 hours less time than it takes a propeller-driven plane to travel from Glen Rock to Qakville. The jet averages 637 km/h while the propeller plane averages 273 km/h. How far is it from Glen Rock to Oakville?
Found 2 solutions by stanbon, checkley79:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
It takes a small jet plane 4 hours less time than it takes a propeller-driven plane to travel from Glen Rock to Qakville. The jet averages 637 km/h while the propeller plane averages 273 km/h. How far is it from Glen Rock to Oakville?
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small jet DATA:
time = x-4 hrs ; rate = 637 km/hr ; distance = 637*(x-4) km
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propeller plane DATA:
time = x hrs ; rate = 273 km/hr ; distance = 273x km
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Equation:
273x = 637x - 637*4
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-364 x = -2548
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x = 7 hrs
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Ans: Distance = 273x = 1911 km
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Cheers,
Stan H.
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Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
D=637T
D=273(T+4)
637T=273(T+4)
637T=273T+1092
637T-273T=1092
364T=1092
T=1092/364
T=3 HOURS FOR THE JET.
3+4=7 HOURS FOR THE PROP PLANE.
PROOF:
D=637*3=1,911 MILES.
D=273*7=1,911 MILES.