Subject
Bank Exam
Topic
Social Islami Bank Ltd. 2013 (PO)
A train went 300 miles from City X to City Y at an average rate of 80 mph. At what speed did it travel on the way back if its average speed for the whole trip was 100 mph?
A train went 300 miles from City X to City Y at an average rate of 80 mph. At what speed did it travel on the way back if its average speed for the whole trip was 100 mph?
ক)
120 mphখ)
125 mphগ)
133(1/3) mphঘ)
137(1/2) mphExplanation
total time = time of leg one plus time of leg two = 6 hours and time of leg one = 300 miles / 80mph = 3.75 hours, so: 6 = time of leg one + 3.75, therefore time of leg one = 2.25. speed during leg two = distance of leg two divided by time = 300 miles / 2.25 = 133.3... mphRelated questions
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