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I'm doing this question for my maths homework and I'm pretty sure I got the answer right but it says I got it wrong. (I got the one highlighted in green correct it's the one below that it says is wrong). Just looking for clarification on if I got the question wrong.

For the working I have done 193.75/1.55 = £125.
£145 - £125 = £20

I have also tried putting 20.00 into the box but that wasn't accepted either.

The Question

L Smith
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  • I get £20 cheaper as well. So the input field is just probably just sensitive. Maybe it wants 20.00, maybe it wants £20. – Arthur Aug 30 '17 at 11:55
  • Tried 20.00 and it didn't accept that either. It's done the same thing on another question also. – L Smith Aug 30 '17 at 11:56
  • Maybe they want -20? At this point I'm just guessing. – Arthur Aug 30 '17 at 11:58
  • I see the same answer, and the same calculation, you did. – lulu Aug 30 '17 at 11:59
  • Doesn't like -20 or -20.00 either. Thanks for trying, I just needed to know I wasn't missing something simple. – L Smith Aug 30 '17 at 11:59
  • Turns out it wanted me to put the £ sign in. Such a pain. – L Smith Aug 30 '17 at 12:05
  • These automated tests are a pain. My son wasted hours before realizing that a probability of $.14$ needed to be written as $14%$, though everything in the problem was written as a decimal and nothing was written as a percent. – lulu Aug 30 '17 at 12:07
  • @lulu I would have written $ 0.14 $, which probably would not have been accepted. I would not have had the idea to write $ .14 $- in the first few hours. – callculus42 Aug 30 '17 at 12:57
  • @callculus We tried $0.14$, and so on. The problem was fairly difficult so we both figured there was a flaw in the calculation. I did it myself, then redid it, then did it a different way. The frustration level was unbelievable. He figured out the percent thing himself, I never would have. I never think of probabilities as percents. – lulu Aug 30 '17 at 13:12

1 Answers1

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If anyone else uses the site "MathsWatch" for their homework. It wanted me to put a "£" sign in the answer even though it says the units in the question.

L Smith
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