Your friend estimated that it would take 5 hours to finish an art project. It actually took 16 hours to finish the project. The amount of time it took to finish the project was % of the estimated time.

31.25%

Step-by-step explanation:

Divide 5 by 16 to get the answer of 31.25% in which it took to finish an art project.

edit: this is wrong so please ignore this :P

320%

Step-by-step explanation:

It took 16 hours to finish what their friend thought would take 5 hours. 16 hours was the actual time, and 5 hours was the estimated time.

16 / 5 = 3.2

3.2 x 100 = 320%

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get