A car traveled 75% of the way from town A to town B at an average speed of 50 miles per hour. The car travels at an average speed of S miles per hour for the remaining part of the trip. The average speed for the entire trip was 50 miles per hour. What is S ?	Pick:  A) 10  B) 20  C) 25  D) 30  E) 50
Total distance = 100 miles (easier to work with %)   75% of the distance = 75 miles   25% of the distance = 25 miles   1st part of the trip →  75/50= 
<gadget id="calculator"> 75/50</gadget>
<output>3/2 = around 1.5</output>
1.5   2nd part of the trip → 25/S= t   Total trip → (75+25)/50 = 1.5 + t » 100/50 = 1.5 + t » 2 = 1.5 + t » t = 0.5   Back to 2nd part of the trip formula: 25/S = 0.5 » S =50   Ans 50
<result>E</result>
A car traveled 75% of the way from town A to town B at an average speed of 50 miles per hour. The car travels at an average speed of S miles per hour for the remaining part of the trip. The average speed for the entire trip was 50 miles per hour. What is S ?