On the TRAKE EIGHT ARRIVAL chart above, ATC has issued you clearance to "Descend at pilots discretion to cross KAYLA at One-One Thousand (11,000 FT MSL)". You are flying at FL290 (29,000 FT MSL), your aircraft has an approximate groundspeed of 300 nautical miles per hour and your aircraft has a standard descent rate of 2,000 FT per minute.Approximately how many nautical miles away from KAYLA would be the minimum distance that you should start your "Top of Descent" to cross KAYLA at 11,000 FT MSL and how many minutes will this take?also i have to be at 250 kts when i arrive at kaylaA: 30 Nautical Miles and 6 Minutes.B: 45 Nautical Miles and 9 Minutes.C: 60 Nautical Miles and 12 Minutes.D: 75 Nautical Miles and 15 Minutes.hello folks im trying to take a open book test and the answer to the question i gave was c .that was the wrong answer .any help thanks...................Robert

any help thanks...................Robert

29,000 - 11,000 = 18,000ft of altitude to lose.18,000ft / 2,000fpm = 9 minutes to descend300kt / 60 = 5nm per minute.5nm * 9 minutes = 45nm to descend.Answer is B.