Respuesta :
Answer:
Yumi will complete math problems at rate of 120 problems per hour.
Step-by-step explanation:
Yumi takes 5/12 of an hour to complete 50 problems.
[tex]\text{5/12 of an hour}=60*\frac{5}{12} =5*5=25\text{ minutes}[/tex]
Let us find how much time Yumi will take to solve 1 problem.
[tex]\text{Time Yumi will take to solve one problem}= \frac{25}{50}= \frac{1}{2}\text{ minute}[/tex]
We can see that Yumi completes one problem in half minute, therefore, Yumi will complete 120 problems in an hour.
Eric takes 4/5 of an hour to complete 48 problems.
[tex]\text{4/5 of an hour}=60*\frac{4}{5} =12*4=48\text{ minutes}[/tex]
Let us find how much time Eric will take to solve 1 problem.
[tex]\text{Time Eric will take to solve one problem}= \frac{48}{48}= 1\text{ minute}[/tex]
Eric takes one minute to solve one problem, therefore, he will solve 60 problems in an hour.
Therefore, Yumi will complete math problems at 2 times greater rate than Eric.
