Respuesta :

[tex]50 \times 0.90 = 45[/tex]
Multiply 50 by 0.90 because you take a discount of 10% off. 1.00 = 100% 0.10 = 10% 0.01 = 1% if you multiply 50 by 0.10 instead you get the amount that is discounted instead of the new selling price.
RELAXING NOICE
Relax