1. 2 hours at 19mph = 38miles
38*1.61*100/4.19=1460 kcal
800 kcal big meal leaves 660 kcal deficit.
Max 250 kcal per hour on-the-road snacks = 500kcal on the road from 5 bars or 4 bananas. 5 bars leaves a 160kcal deficit and 4 bananas leaves a 180kcal deficit.
2. 1407/1.61 = 874 miles
847/14 = 62.4 hours
62.4/7 = 8.9 days. So it will take Andy 9 days.
3. 1407km -> 140700kJ
140700/4.19 = 33580 kcal for the whole trip
33580/9 = 3731 kcal per day. (breaking the journey into nine equal steps)
**OR** 7 hours at 14mph = 98 miles
98*1.61=157.78km
157.78*100/4.19 = 3766 kcal per day (for days 1-8, with one 'shorter' day at the end).
In addition he needs 2500 kcal per day to survive so his total calorie needs are 6231 (OR 6266) kcal per day.
He has 3*1000kcal meals leaving 3231 (or 3266) kcal.
He can have 350kcal per hour for 7 hours in on-the-road snacks which is 2450 kcal.
This leaves 781 (816) kcal to get from off-the-road snacks.
Ways of achieving 2450 kcal from snacks and energy drinks:
Andy can carry 3l of energy drink = 1140kcal (and he can then refill with water to provide his fluid needs for the rest of the ride).
He can carry
8 bananas = 960kcal
OR 8 energy bars = 1760 kcal
OR 16 cheap cereal bars = 1600kcal
OR 24 energy gels = 2640kcal (he wouldn't be allowed to consume more than 2450kcal worth)
So he can meet his energy needs with any of these supplemented by energy drink, EXCEPT bananas.