There are 90 chairs set up in the gym for an assembly. After the assembly, all the chairs will
be put away on racks that hold 8 chairs. How many racks are needed?
12 racks because 90 chairs divided into 8 racks, 11 racks is fully stacked with 8 chairs within it. while an addion rack will be added because 2 chairs is left. so the answer is 12 racks
