Can you work out this numeracy question?

An Art portfolio was due on 14th April, with a late submission penalty of 3% per day.The Art teacher gave Jessie's portfolio a mark of 91%. However Jessie handed in her assignment a week late, on 21st April. What will Jessie's final mark be for her portfolio? Give the mark as a whole percentage.

How do you work it out?

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Noreaster · F

oops I get 72%

summerlove · 31-35, F

@Noreaster That's the right answer. How did you work it out?

Noreaster · F

@summerlove

So she had 91% and you subtract 21% of the 91 and come up with 71.89%

summerlove · 31-35, F

@Noreaster I still don't get it lol. That works out to be 70 percent though when you take 91 away from 21. Can you explain it step by step how you worked it out? Thanks so much.

Noreaster · F

@summerlove You're taking away 21% of 91 which is 19.11

Noreaster · F

7 days at 3% a day = 21%

summerlove · 31-35, F

@Noreaster Thank you!

Daltonico · 61-69, M

@Noreaster And you are correct.