A train passes city [গণিত] at 8.25 am and city [গণিত] at 11.05 am . The distance between city [গণিত] and Y is 320 miles. What is the average speed in miles per hour of the train?
ক. 135
খ. 120
গ. 270
ঘ. None of these
উত্তর: 120
ব্যাখ্যা: [গণিত] am [গণিত] Speed [গণিত] distance [গণিত] time [গণিত] 120 mph
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