Question

If a sweater sells for $48 after a 25 % mark down, what is the original price?

Answer 1

Use proportions.

Example:
If a shirt sells for $30 after a 20 % mark down, what is the original price?
20% discount means the price is (100-20)=80% of the original price.
So using proportions,

80% : $30
100% : X
Now cross multiply, i.e. (and replace : by =)
80%*X = $30*100%
divide both sides by 80%
X=$30*(100%/80%)=$30*100/80=$37.50 (use your calculator if necessary)

Proceed the same way with your question and post your answer for a check if you wish.

Answer 2

so 64?