Question

A computer company gives a discount of 10% off of the marked price on a new
piece of software. If it makes a profit of 11% on this sale, what percent does the
marked price exceed the cost price?

Answer 1

sale price = 1.11 cost

sale price = 0.90 marked price
so
0.90 marked price = 1.11 cost
or
marked price = 1.23 cost

so 23 %