How much Muffins does Bill get ?

Algebra Level 1

There are 3 friends, Alex, Bill and Sam. They have a certain number of muffins. Alex takes 1 muffin and then takes 1/3rd of the remaining muffins. Bill takes 6 muffins and then takes 1/3rd of the remaining muffins. Sam takes the remaining 40 muffins.

How many muffins did Bill get. Do not use hit and try method.

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