Question

Rick rides 11 1/8 miles in an hour with his bike in second gear going uphill. If Rick rides downhill in fourth gear he goes 2 1/2 faster. How many miles will Rick go in an hour downhill in fourth gear?

Answer 1

Assuming "...he goes 2 1/2 faster" is meant to say "he goes 2 1/2 times faster".

His downhill speed is therefore
11 1/8 * 2 1/2 = 27 13/16 mph