The original price of a dress is $39.99. Julie buys the dress when it is on sale for 10% off its original price. Two weeks later
, Mindy buys the same dress when it is now on sale for 20% off its original price.
How much more money did Julie spend than Mindy on the dress?
$ [blank]
Enter your answer as a number. If it is a decimal, round it to the nearest whole number, like this: 42
It would be $2.25
if each student pays one more penny than the last one the penny count would be up to 150 pennies times the number of student which is 150 so multiply and add your decimal