Printing press X can print an edition of a newspaper in 12 hours, whereas press Y can print the same edition in 18 hours. What is the total number of hours that it will take the two presses, working together but independently of one another, to print the same edition?

A worker can load 1 full truck in 6 hours. A second worker can load the same truck in 7 hours. If both workers load one truck simultaneously while maintaining their constant rates, approximately how long, in hours, will it take them to fill 1 truck?

A team of 6 workers is building a levee. If each man works at the same rate and it takes 1 man 18 hours to build a levee, how long would it take the team to build a levee?

Two tanks, I and II have capacities in the ratio 3:4 respectively. A pipe fills Tank I in 5 hours at constant rate. How many hours will it take for the same pipe to fill Tank II if the rate at which the pipe fills the tank is doubled?

In a store room, one group of staff members fill the store with boxes and the other group of staff take the boxes from the store and supply them to the market. The boxes are stored at the rate of 5 boxes per hour whereas they are supplied at the rate of 3 boxes per hour. If the room is filled with 60 boxes, in how many hours it will be filled?

Linda takes 4 hours to do a job, whereas Bob takes 6 hours to do the same job. They worked together at their respective rates but Bob took two breaks of equal duration during the time. Despite that, the two of them were able to complete the job in 2 hours 30 minutes. What is the duration of each break that Bob took. ?

Renee can mow a lawn in 2 hours, and Jeremy can mow the same lawn in 1 hour and 15 minutes. If Renee starts mowing the lawn at 2:00 P.M., and Jeremy starts helping her at 2:30 P.M., at what time will they finish mowing the lawn, rounded to the nearest minute?

Running at the same constant rate, 6 identical machines can produce a total of 270 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?

Mary’s annual income is $15,000 and John’s annual income is $18,000. By how much must Mary’s annual income increase so that it constitutes 55% of Mary and John’s combined income?

Alice’s take-home pay last year was the same each month, and she saved the same fraction of her take-home pay each month. The total amount of money that she had saved at the end of the year was 3 times the amount of that portion of her monthly take-home pay that she did NOT save. If all the money that she saved last year was from her take-home pay, what fraction of her take-home pay did she save each month?