Solve the problem by writing and solving a suitable system of equations.A flight leaves San Francisco at 
and arrives in London at 
(London time). This 
difference includes the flight time plus the change in time zones. The return flight leaves London at 
and arrives in San Francisco at
src="https://sciemce.com/media/4/ppg__rrrrr0625191014__f1q15g5.jpg" alt="" style="vertical-align: -4.0px;" /> (San Francisco time). This
difference includes the flight time minus the change in time zones, plus an extra hour due to the fact that the return flight westward is into the wind. Find the actual flight time eastward and the difference in time zones.
A. flight time eastward: 10 hours; difference in time zones: 8 hours
B. flight time eastward: 9 hours; difference in time zones: 9 hours
C. flight time eastward: 9 hours; difference in time zones: 8 hours
D. flight time eastward: 11 hours; difference in time zones: 7 hours
Answer: A
Mathematics
src="https://sciemce.com/media/4/ppg__rrrrr0625191014__f1q15g5.jpg" alt="" style="vertical-align: -4.0px;" /> (San Francisco time). This difference includes the flight time minus the change in time zones, plus an extra hour due to the fact that the return flight westward is into the wind. Find the actual flight time eastward and the difference in time zones.
A. flight time eastward: 10 hours; difference in time zones: 8 hours
B. flight time eastward: 9 hours; difference in time zones: 9 hours
C. flight time eastward: 9 hours; difference in time zones: 8 hours
D. flight time eastward: 11 hours; difference in time zones: 7 hours
Answer: A
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