The distance between Station Atena and Station Barcena is 90 miles. A train starts from Atena towards Barcena. A bird starts at the same time from Barcena straight towards the moving train. On reaching the train, it instantaneously turns back and returns to Barcena. The bird makes these journeys from Barcena to the train and back to Barcena continuously till the train reaches Barcena. The bird finally returns to Barcena and rests. Calculate the total distance in miles the bird travels in the following two cases:
(a) The bird flies at 90 miles per hour and the speed of the train is 60 miles per hour.
(b) the bird flies at 60 miles per hour and the speed of the train is 90 miles per hour Choose the correct option:
A) 135miles,60miles
B) 134miles,60miles
C) 135miles,70miles
D) 136miles,60miles
E) 135miles,80miles
A) There is no need to consider their meeting pointt at all.   The train has been running for 90miles/(60miles/hr)=1.5hrs.   bird flies till train reaches destination from starting point.so bird flies for1.5hrs at the vel given(90).so distance=1.5*90= 
<gadget id="calculator">1.5*90</gadget>
<output>135</output>
135miles   b) time of train=1hr.so distance of bird=60*1= 
<gadget id="calculator">60*1</gadget>
<output>60</output>
60miles   135miles,60milesnswer 135miles,60miles
<result>A</result>
The distance between Station Atena and Station Barcena is 90 miles. A train starts from Atena towards Barcena. A bird starts at the same time from Barcena straight towards the moving train. On reaching the train, it instantaneously turns back and returns to Barcena. The bird makes these journeys from Barcena to the train and back to Barcena continuously till the train reaches Barcena. The bird finally returns to Barcena and rests. Calculate the total distance in miles the bird travels in the following two cases:
(a) The bird flies at 90 miles per hour and the speed of the train is 60 miles per hour.
(b) the bird flies at 60 miles per hour and the speed of the train is 90 miles per hour