Question

I had #50 with me!

I spent #20, it remained #30
I spent #15, it remained #15
I spent #9, it remained #6
I spent #6, it finished #0
Total #50, Total #51
Where did the extra #1 come from?
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Answer 1

Explanation:

There is no 1 extra # You had #50 so you could only spend #50.

Total spent - 50 = 0.

Adding the amounts remaining will not give you the total spent.

Suppose you spend #11 on the third spend and #4 on the last one:

the remaining amounts will be

30 15 4

= #49.

or #10 and #5:

remaining amounts

= 30 + 15 + 5 = #50

- the same value this time!

The total on the right will vary according to the amounts you spend on each purchase.