The Happy Hamburger served 100 customers yesterday. 3/10 of the customers ordered breakfast 2/5 of the remaining customers ordered take-out. The rest of the customers ordered dessert. How many customers ordered dessert?

Answer 1

well 30 customers ordered breakfast
and 40 customers ordered take-out
so 30 left ordered desert

hope this helps

Answer 2

30 ordered breakfast

"REMAINING customers"
100 - 30 = 70

70 * .4 = 28 ordered take out

100 - 28 - 30 = ? dessert