Time Difference

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(CAT 1997)

Boston is 4 hr ahead of Frankfurt and 2 hr behind India. X leaves Frankfurt at 6 p.m. on Friday and reaches Boston the next day. After waiting there for 2 hr, he leaves exactly at noon and reaches India at 1 a.m. On his return journey, he takes the same route as before, but halts at Boston for 1hr less than his previous halt there. He then proceeds to Frankfurt. 

1. If his journey, including stoppage, is covered at an average speed of 180 mph, what is the distance between Frankfurt and India?
a. 3,600 miles 
b. 4,500 miles 
c. 5,580 miles 
d. Data insufficient

2. If X had started the return journey from India at 2.55 a.m. on the same day that he reached there, after how much time would he reach Frankfurt?
a. 24 hr 
b. 25 hr 
c. 26 hr 
d. Data insufficient

3. What is X's average speed for the entire journey (to and fro)?
a. 176 mph 
b. 180 mph 
c. 165 mph 
d. Data insufficient




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