Question

In an average of 65 minutes if a train stops at three stations for two minutes each and the distance is 115 miles between stops what is the average speed

Answer 1

117mph

Explanation:

Given that

Total number of stations= 3

Total average time of journey of train = 65

total stop time at three stations = 3×2 =6 min

Total distance between stops = 115 miles

as we can see

Total time train was travelling = 65- 6 =59 min

so, average speed of train can be calculated as:

Average Speed =
`(Distance -travelled-between -stations)/(Total-time-the-train-travelled)`

Average Speed =
`(115)/(59) =1.95 miles/minute`

To convert this speed into miles per hour (mph) multiply the above speed by 60

Average speed = 60×1.95 =117 mph

So the average speed of train is 117mph.