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Challenge Answer 81


Surprise at the restaurant

After we received over 2 million emails asking for a solution to this restaurant problem, we decided to put the answer here in our challenges section!

There is an error in the statement in the problem, as he proposes to subtract $ 1.00 from each friend to then add the new values ​​and reach the initial $ 30.00. Well, what matters is not the sum of what is left for each one, but WHERE are the initial $ 30.00!

R $ 25,00 are with the restaurant owner
$ 2.00 are with the waiter
$ 3.00 are with friends

$ 25 + $ 2.00 + $ 3.00 = $ 30.

Ready, solved!

Want a more detailed explanation? So think of it this way:

If the restaurant owner gave $ 5 off, the final bill was $ 25.
$ 25 divided by 3 = $ 8,3333 for each friend. As each of them received $ 1.00 back:
$ 8.3333 + $ 1.00 = $ 9.3333.
$ 9.3333 x 3 = $ 28
$ 28 + $ 2.00 (from the waiter) = $ 30.

Back to the statement