Answer:
320%
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%
31.25%
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
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