Use the ATA (actual time of arrival) You started at 1h07min, and ended
at 1h42, so its been 35 min. In that time you started
with 3400kg fuel, ended with 2700kg fuel
So you used 700kg of fuel in 35 min, thats 20kg a minute, so in 40min you would use 800kg
2700-800, gives you 1900kg
There are quite a few of these around - simply take the LATEST ACTUAL
data ... in this case BETA to GAMMA, calculate a fuel flow (normally kg/minute
will be easiest), then use that fuel flow on to the next waypoint - in this
case MIKE.
I think these are 3 point questions - quite straight forward once you've
seen it, but just be careful you use the correct data!!