Problem Solving

If Jack had twice the amount of money that he has, he would have exactly the amount necessary to buy 3 hamburgers at $0.96apieceand2milkshakesat$1.28 apiece. How much money does Jack have?

A bank customer borrowed $10,000,butreceivedydollarslessthanthisduetodiscounting.Iftherewasaseparate$25 service charge, then, in terms of y, the service charge was what fraction of the amount that the customer received?

If r and s are integers and rs + r is odd, which of the following must be even ?

If (t- 8) is a factor of t^2 - kt - 48, then k=

An empty swimming pool with a capacity of 5,760 gallons is filled at the rate of 12 gallons per minute. How many hours does it take to fill the pool to capacity' ?

A hiker walked for two days. On the second day the hiker walked 2 hours longer and at an average speed 1 mile per hour faster than he walked on the first day. If during the two days he walked a total of 64 miles and spent a total of 18 hours walking, what was his average speed on the first day?

Coins are dropped into a toll box so that the box is being filled at the rate of approximately 2 cubic feet per hour. If the empty rectangular box is 4 feet long, 4 feet wide, and 3 feet deep, approximately how many hours does it take to fill the box?

The organizers of a fair projected a 25 percent increase in attendance this year over that of last year, but attendance this year actually decreased by 20 percent. What percent of the projected attendance was the actual attendance?

If it is true that x > -2 and x < 7, which of the following must be true?

What is the sum of the integers in the table above?

3, k, 2, 8, m, 3 The arithmetic mean of the list of numbers above is 4. If k and m are integers and k ≠ m, what is the median of the list?

Last year Department Store X had a sales total for December that was 4 times the average (arithmetic mean) of the monthly sales totals for January through November. The sales total for December was what fraction of the sales total for the year?

The Official Guide For GMAT® Quantitative Review, 2ND Edition If a basketball team scores an average (arithmetic mean) of x points per game for n games and then scores y points in its next game, what is the team's average score for the n+1 games?

If x + y = 8z, then which of the following represents the average (arithmetic mean) of x, y, and z, in terms of z ?

The sum of the ages of Doris and Fred is y years. If Doris is 12 years older than Fred , how many years old will Fred be y years from now, in terms of y ?

If Mario was 32 years old 8 years ago, how old was he x years ago?

Craig sells major appliances. For each appliance he sells, Craig receives a commission of $50plus10percentofthesellingprice.DuringoneparticularweekCraigsold6appliancesforsellingpricestotaling$3,620. What was the total of Craig's commissions for that week?

Rene earns $8.50 per hour on days other than Sundays and twice that rate on Sundays. Last week she worked a total of 40 hours, including 8 hours on Sunday. What were her earnings for the week?

A certain manufacturer produces items for which the production costs consist of annual fixed costs totaling $130,000andvariablecostsaveraging$8 per item. If the manufacturer's selling price per item is $15,howmanyitemsmustthemanufacturerproduceandselltoearnanannualprofitof$150,000 ?

A certain grocery purchased x pounds of produce for p dollars per pound. If y pounds of the produce had to be discarded due to spoilage and the grocery sold the rest for s dollars per pound, which of the following represents the gross profit on the sale of the produce?