Do the question given in the sheet. I have cropped the image very carefully and
ID: 1837814 • Letter: D
Question
Do the question given in the sheet. I have cropped the image very carefully and checked it twice , so there is no problem in the question and the sheet. I have posted HDR picture so it is the best picture quality . Any way there is no problem . You only have to solve this question . Everything given in the question . I don't think you need any more info because there is nothing to tell you from my side . I have given everything perfect . So kindly solve this question as soon as possible .
Explanation / Answer
say the distance between town is S
and the plane speed is V
when there is no wind time of trip T= 2S/V
suppose the velocity of wind is U = tV (t times V)
then total trip time is Tw = S/(V+u)+S/(V-u)
Tw = S/(V+tV)+S/(V-tV) = 2S/V x [1/(1-t2)]
Tw=T x [1/(1-t2)]
it is assumed that wind velocity is less than plane velocity otherwise plane wont be able to reach from town A to town B
term 1-t2 < 1 and 1/(1-t2) is more than 1
Tw > T
i think it is option B
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