a) 8:10 - 7:08 = 1 hour and 2 mins ----Sufficient
b) 8:30 - 20 mins = 8:10 ------------Sufficient
train schedule
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Source: Beat The GMAT — Data Sufficiency |
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namitrajiv
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it should be B ,
A is not sufficient ....because its not mentioned whether travel left at the schedule time
A is not sufficient ....because its not mentioned whether travel left at the schedule time












