Kenneth drove 184.25 miles in 3 7/20 hours. what was his average speed?

3 7/20 = 3 35/100 = 3.35

184.25 ÷ 3.35 = 55

Kenneth average speed 55 miles per hour.

I’m not absolutely sure but i think it’s 7x6x5x4x3x2=5040 because as the first character you can take any of the 7 given then you are left with 5 then 6 then 4 etc.