Question

Siobhan is preparing for her beach party in January. She needs to buy 120 cubic feet of sand to cover her garage floor. Sand comes in bags of 10 cubic feet. Each bag of sand costs $7.50, including tax. How much money does Siobhan need to turn her garage into a beach?

Answer 1

It will cost Siobhan 90$ to turn her garage into a beach

Answer 2

Well so:
Amount of sand required=120 cubic feet.
Amount of sand per bag= 10 cubic feet.
Number of bags required=120/10 =12 bags
Cost of 1 sand bag = $7.50
Cost of 12 sand bags = $ 12*7.50
Which will be: $ 90
So she will need sand bags worth of $90 to turn her garage into a beach.