Could anyone please suggest what is the best way to solve a question like this...
1. Tom reads at an average rate of 30 pages per hour, while Jan reads at an average rate of 40 pages per hour. If Tom starts reading a novel at 4:30, and Jan begins reading an identical copy of the same book at 5:20, at what time will they be reading the same page?
A) 9:30
B) 9:00
C) 8:40
D) 7:50
E) 7:00
2. Steve get on the elevator at the 11th floor of a building and rides up at a rate of 57 floors per minute. At the same time Joyce get on an elevator on the 51st floor of the same building and rides down at a rate of 63 floors per minute. If they continue traveling at these rates, at which floor will their paths cross?
A) 19
B) 28
C) 30
D) 32
E) 44
3. George takes 8 hours to copy a 50 page manuscript while Sonya can copy the same manuscript in 6 hours. How many hours would it take them to copy a 100 page manuscropt, if they work together?
A) 6 6/7
B) 9
C) 9 5/7
D) 10 2/3
E) 14
TIA!!