tienes que plantear una regla de 3 100%-15%=85%
x-------------------100%
85-----------------85%
x=100*85
----------
85
x=100
el pantalon valia 100 euros
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tienes que plantear una regla de 3 100%-15%=85%
x-------------------100%
85-----------------85%
x=100*85
----------
85
x=100
el pantalon valia 100 euros