Mandy bought some donuts and left it in the staffroom. One hour later, 3/5 of the donuts were eaten.When she returned another hour later, 2/3 of theremaining donuts were gone and four donuts wereleft. How Mandy donuts did Mandy buy?
Take 3/5 away from the unit square
2/3 of the remaining donuts were gone
2 out of 15 boxes are left
If 4 donuts are left, then each yellowbox represents 2 donuts