Math easy question

Question

A swimmer completes 8 laps in 1/4hour. What is the swimmers rate per hour

Answer 1

laps divided by hours

 

8 divided by 1/4

 

32 laps per hour

Answer 2

"8 laps in 1/4hour"  is

  8 laps per 1/4 hour

 (8 laps) / (1/4 hour)

 (8)/(1/4) laps per hour

 (8*4) laps per hour   [to divide by fraction; invert and multiply]

  32 laps per hour