John eats 2/5 of an apple pie and then jia eats a third of what left. what fraction of the pie is left after both of them eat?

Step-by-step explanation:

1-1-1-1-1 = 5 apple pies

Divide the apple pie into 5 pieces

Then you take away 2 out of the 5 pieces = 3 pies left

Then you take one pie (1/3rd) from the 3 pies left = 2

Answer is 2

so mark-up is 0.4 multiplied by 180 = 72