Harper drinks a 1/2 bottle of mineral water per day. She buys the mineral water by the case at a big box store. They come 24 bottles to a case and are currently on sale for $12.00. If she wants to buy enough cases to last her 240 days, how much will she spend?
Stream of thoughts:
60
She drinks 1 / 2 bottle a day and there are 24 bottles in a case so a case will last 24 /.

5 = 48 days.

She needs enough to last her 240 days and 1 case will last her 48 days so she needs 240 / 48 = 5 cases.

Each case is on sale for $12.

00 and she needs 5 cases so that's 12 * 5 = $60.

00.

.

So, the final answer is 60