Austin\'s position to San Diego is nearly equal to Austin\'s position to Orlando
ID: 1277169 • Letter: A
Question
Austin's position to San Diego is nearly equal to Austin's position to Orlando with a distance of about 1200 miles separating Austin from the other two cities. Southwest jets fly at 500 mph in still air. On a day when the jet steam flows from west to east at 100 mph, what are the times it will take Southwest jets to fly to from Austin to San Diego and from Austin to Orlando?
1. 2.0 hr from Austin to Orlando; 3.0 hr
from Austin to San Diego
2. 3.5 hr from Austin to Orlando; 1.7 hr
from Austin to San Diego
3. 3.0 hr from Austin to Orlando; 2.0 hr
from Austin to San Diego
4. 1.7 hr from Austin to Orlando; 3.5 hr
from Austin to San Diego
5. 2.4 hr from Austin to Orlando; 2.4 hr
from Austin to San Diego
Explanation / Answer
From west to east, the velocity East will be 500 + 100 = 600 mph
d = vt
1200 = 600t
t = 2 hrs to Orlando
From East to West, the velocity will be 500 - 100 = 400 mph
d = vt
1200 = 400 t
t = 3 hrs
Thus, the answer is choice number 1...
1. 2.0 hr from Austin to Orlando; 3.0 hr
from Austin to San Diego
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