Crystal earns 5.50 an hour how much will she earn for 3 hr and 45 mins of work

To find the amount of money she would earn for 3 hours. Simply take the value of 5.5 and multiply it by the value of 3, then convert 45 minutes to hours and multiply that amount to the amount she would be earning for 1 hour

Then add the values together, the final result would be $ 20.625.

31/6= 19/6 19/6 *1/7=19/42