15. After 20 minutes at work, Ellen was able to finish 3 tasks. If she works an 8 hour day, how many tasks should she expect to finish?

72

Step-by-step explanation:

An hour is 60 minutes.

Multiply the amount of tasks to the amount of times 20 goes into 60 (60/20).

3×3= 9

Once you have the amount of tasks finished in an hour (9 tasks), you will multiply 8 hours by 9 tasks.

8×9= 72

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.

66.666666667%

step-by-step explanation:

divide 150 by 100

divide 100 by 1.5

there you go!

decreased by 33.333333334%