GMAT Question of the Day – PS Work/Rate – May 2nd, 2014

The express train would have taken 30% longer to get from Station K to Station M if it had been traveling 18 miles per hour slower. What was the express train’s actual average speed, in miles per hour, from Station K to Station M?

A. 78

B. 82

C. 84

D. 85

E. 93

[spoiler]A.[/spoiler]

Here’s an Official GMAT question on which we also use the T method to organize the information: A boat traveled upstream a distance of 90 miles at an average speed of (v-3) miles per hour and then traveled the same distance downstream at an average speed of (v+3) miles per hour

Distance, Work and Rate – Average Rate 1

Distance, Work and Rate – Average Rate 2

For more GMAT distance, work, and rate practice visit GMAT Question of the Day.