Question 716776
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.