On Monday, Harold picked up four donuts and five large coffees for the office staff. He paid $ 6.33
On Tuesday, Melinda picked up three donuts and three large coffees for the office staff. She paid $ 4.11
What is the cost of one donut? What is the cost of one large coffee?
The cost of one donut is $
The cost of one large coffee is $

The appalachian trail is a hiking trail that passes through the appalachian mountains. three members of a teen hiking group hiked a section of the trail. the hikers stopped at a rest area and equally shared 3 4 gallon of water. how much water did each person get?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?