Hi I was wondering if this is mistake in Bob taits CFPA bookllet.

[i]"If trip fuel is 35 gals, and the destination requires 60 min holding, find the mini
mum fuel required at start-up for an air transport flight in an Echo, if holding is at 35% MCP.
Answer: Min fuel
=
=
35 x 1.1+15 + 3 + 17.2
73.7 gal
EXERCISE 4.14 Answers on page 129"[/i]
It says it is 17.2 for 60 min holding, however according to the bob tait supplement at 35%MCP the use per usgallon per hour is 8.6 for best economy. So it should be 8.6 correct?

Thanks!