Percent question

Question

A customer is upset with the Sports Genius staff because he thinks the price of his purchase has been calculated incorrectly. The cashier took 10% off $80, then 20% off that cost. The customer believes she should have added the two discounts and taken 30% off $80. Who is correct? Do these strategies result in the same final cost?

Answer 1

Cashier method result:

Customer should pay

$80x(1-10%)x(1-20%)= $57.6

 

Customer method result

Customer should pay

$80x(1-30%)=$56

 

The cashier method is right.