Jimmy drove the first half of a 50-mile trip in x hours and the second half in y hours. Which of the following is equal to Jimmy’s average speed, in miles per hour, for the entire trip?
Choices.
A) 50/(x + y)
B) 100/(x + y)
C) 25/x + 25/y
D) 50/x + 50/y
E) 100/x + 100/y
Time taken by Jimmy to cover first half i.e 25 miles of a 50 mile trip = x   time taken by Jimmy to cover the second half i.e 25 miles of a 50 mile trip = y   Total time taken by Jimmy = x+y   Jimmy's average speed for the entire trip =total distance /total time   =50/(x+y)   50/(x + y)nswer: 50/(x + y)
<result>A</result>
Jimmy drove the first half of a 50-mile trip in x hours and the second half in y hours. Which of the following is equal to Jimmy’s average speed, in miles per hour, for the entire trip?