Determining flight time with Mach number ATPL
Can someone help me solve this question from the aero course ATPL workbook 6th edition?
The following wind reports relate to a westbound flight of a small business jet aircraft:
274045
How long would it take for this aircraft to cover a distance of 115 NM if it cruised at Mach .83?
31 mins
25 mins
20 mins
17mins
Any help would be greatly appreciated!