$18$

False

Question $30($Mandatory$)(1$ point$)$

$$ Saved

An airliner makes the round trip from Eastville to Westburg, which lie on an eastwest line, in $3\mathrm{.}0$ h if no wind is blowing. If a wind is blowing from the east such that the wind speed is less than the speed of the airplane relative to the air, the round trip will take $3\mathrm{.}0$ h $.$

True

False