36 inches is equal to 3 feet ;)
The answer would be A. He should use the mean because it is in the center of the data. I hope this helped ^^
Ten-thousand AFAFANDIUAHDIUAHIUDHAIDh (had to write 20 more "letters")
A. sandwiches per hours is 4.5/hour
b. hours per sandwich is 0.33/sandwich