Hey Richard,
Ok., here is a new one
This one seems a little bit more complex.
Two aircraft are converging to the same reporting point at FL 330. The wind is 350 / 60kts. At 0700 the distance between the aircraft is 130NM, and the controller requests aircraft A to reduce the Mach number so there will be 3 minutes separation over the reporting point.
Aircraft A: .76M, TAT = -21c, Track 330(T)
Aircraft B: .79, TAT = -19c, Track 060(T)
1)What is the ETA of aircraft A at the reporting point?
2) What Mach number should aircraft A maintain if the SID temp is -45c
Looking forward to hearing from you.