two friends A,B are running up hill and then to get down! length if road is 440 yards A on his return journey met B going up at 20 yards from top, A has finished the race .5 minute earlier than B, then how much time A had taken to complete the race. Choose the correct choice.
A) 55 minutes
B) 95 minutes
C) 105 minutes
D) 115 minutes
E) 125 minutes
A gains 20 yards over B in it's down the hill journey. So for entire journey A will have a lead of 40 yards over B.   now, when A is at destination B is 40 yards behind which B will cover in 5 minutes.   so, by unitary method we get..   For B, 40 yards in 5 minutes   therefore,1 yard in 5/40 minutes   therefore,880 yards in  (5/40)*880= 
<gadget id="calculator"> (5/40)*880</gadget>
<output>110</output>
110 minutes.   Now b takes 110 minutes so A will take 105 minutes.   ANSWER:105 minutes
<result>C</result>
two friends A,B are running up hill and then to get down! length if road is 440 yards A on his return journey met B going up at 20 yards from top, A has finished the race .5 minute earlier than B, then how much time A had taken to complete the race.