Step-by-step explanation: 10 minutes are taken out of the hour so you are left with 50. 50 minutes into seconds is 3,000. Next you add the average amount of seconds for each task totaling to 234.6. The last step is to divide the amount of time she has with the amount of time it takes to do the the task. 3,000/234.6 is 12.7877 or 12.79
