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@Gyro Gearloose
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.@SirLancelotDuLac some help here too..
Ig this?
ans is 169.5
imagine that there is a mirror in place of the wall and take image of the soruce in it as the source of the relected waves wont that be apporaching the observer with a velocity of +5
instead of f(1-332/337)=5
it will be f(332/327-332/337)=5
you are getting 169.46 by this