doreens mph and hour sues mph and hour

doreens mph and hour sues mph and hour

A man flies a small airplane from Fargo to Bismarck, North Dakota --- a distance of 180 miles. Because he is flying into a head wind, the trip takes him 2 hours. On the way back, the wind is still...

A man has 25 coins in his pocket, all of which are dimes and quarters. If the total value of his change is $3.55, how many dimes and how many quarters does he have?

Emanuel needs to produce 4000 milliliters of 72.5% alcohol solution. At his disposal he has 20% alcohol solution and 80% alcohol solution. How much of each does he need in order to produce his desired...

Please give me answer this question..

There are three types of candy: A, B, C. A costs $4.40 per pound and B costs $4.20 per pound. If 2 pounds of A, 3 pounds of B, and 5 pounds of C are mixed, then the mixed candy costs $5.74 per pound...

A tank originally contains 100 gallons of fresh water. Water containing 5 lbs. of salt per gallon is poured into the tank at a rate of r gal/min. The mixture is allowed to leave the tank at...

A 100-gallon tank holds a (well) mixed brine solution with a total of 10 pounds of salt. Fresh water comes in at a rate of 2 gallons per minute, and a brine solution leaves the tank at a rate...

a car salesman makes $1000 each day that he works and makes approximately $250 commission for each car he sells. if a car salesman wants to make at least $3500 in one day, how many cars does he need...

ok so i tried working this out in multiple ways but i couldn't really figure it out. Maybe i was using the wrong equations. I'm not really sure. If anyone could help that would be great.

the title says it all. I've never been able to solve these types of problems so please show how you worked the problem as well so i can learn for the future. Please and thank you.

Jon recently drove to visit his parents who live 600 miles away. On his way there his average speed was 14 miles per hour faster than on his way home (he ran into some bad weather). If Jon spent a...

How old is Christian?

David leaves his house, jogging down the street at 7 mph. Once David has gone one third mile, Jacob comes out and follows him at a rate of 7.5 mph. How long will it take...

a plaque has a perimeter of 17.5 inches. It is three quarters as tall as it is wide. what is its width in inches.

the area of a rectanglular garden is 640 ft square. the sum of the width and twice the length is 72 feet. find the possible length of the garden

A chemical company makes two brands of antifreeze. The first brand is 65% pure antifreeze and the second brand is 85% pure antifreeze. In order to obtain 160 gallons of a mixture that contains...

Juana is building a mall with twenty stores, each one is 20 feet by thirty five feet. the mall has one hallway with the dimensions of 100 feet by 20 feet. What is the malls square footage?

Smith engineering is in the process of reviewing the salaries other surveyors. During this review, the company found that an experience Surveyor can survey a roadbed in 3 hours. An apprentice needs...

The sum of the digits of a 3-digit number is 12. If we subtract 495 from this number the same number gets reversed.Find that 3-digit number if sum of all pairwise product of the digits of that number...