# The Extra One

John had $50 (Dollars).He brought the Study material in$50.first upon he brought the School bag in $20.Out of$50 remained balance is $30 after that he brought book's to$15.The balance remained in his hand was $15 then he brought Compass to$9 out of remained $15 then he brought Pen to$6 out of $6 then balance was zero.Now he had no anymore balance remained in his hand. He wanted to recalculate whatever he brought. The Expenditure on study material to balance remained as ... per listed like... paragraph  Expenditure | Balance$20                  $30$15                  $15$9                    $6$6                    $0 +___________ +___________$50       -          $51  here john calculate but the answer was too different in recalculation john could not understood.He calculate he found the sum of total expenditure was$50 where the sum of total balance was $51 .From where does this extra one came from in balance. What do you think ? Note by A Former Brilliant Member 4 years, 1 month ago This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science. When posting on Brilliant: • Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused . • Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone. • Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge. • Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events. MarkdownAppears as *italics* or _italics_ italics **bold** or __bold__ bold - bulleted- list • bulleted • list 1. numbered2. list 1. numbered 2. list Note: you must add a full line of space before and after lists for them to show up correctly paragraph 1paragraph 2 paragraph 1 paragraph 2 [example link](https://brilliant.org)example link > This is a quote This is a quote  # I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world" # I indented these lines # 4 spaces, and now they show # up as a code block. print "hello world" MathAppears as Remember to wrap math in $$ ... $$ or $ ... $ to ensure proper formatting. 2 \times 3 $2 \times 3$ 2^{34} $2^{34}$ a_{i-1} $a_{i-1}$ \frac{2}{3} $\frac{2}{3}$ \sqrt{2} $\sqrt{2}$ \sum_{i=1}^3 $\sum_{i=1}^3$ \sin \theta $\sin \theta$ \boxed{123} $\boxed{123}$ ## Comments Sort by: Top Newest The balance need not add to the original amount. Take for example that he bought 50 items one at a time each of$1.
Then, his balance (the way it is listed in the question) will add up to $1225, an extra of$1175!!!!

- 4 years, 1 month ago

Right ,The sum of Balance never calculate,so don't find that extra 1\$.

- 4 years, 1 month ago