Work + time - math problems

Number of problems found: 270

  • Strawberries
    jahoda Three people pick strawberries from 48 rows in 8 hours. How many hours do five people need to pick strawberries from 20 rows?
  • The bricklayer
    murar The bricklayer built a six-meter base of the fence in 3 hours. How long does it take to build a 14 m long base?
  • My brother
    zosity My brother is missing 240 assignments. He wants to finish them all. If he does two each day, how many days will it take for him to finish 1/3 of his assignments?
  • Monica 3
    clocks Monica works on her drawings for 2 hours. She spends 1/6 hour on each drawing. How many drawings does she work on in 2 hours?
  • Your Mom
    cleaning Your Mom can clean your entire house in 3 hours. However, your dad takes 5 hours to clean the house. How long it will take for them to clean the house if they work together? (Write the numerical answer round to the nearest thousandth)
  • Hour salary + fix
    work Devin recently hired a contractor to do some necessary work. The contractor gave a quote of $395 for parts plus $62 an hour for labor. Let x  represent the number of labor hours worked. Write an algebraic expression to represent the total cost for the rep
  • Two workers
    work One worker makes a part 4 hours and the second 9 hours later than they would make the same part together. How long does it take for each worker to make the part himself?
  • Part-timers
    jahoda Six part-timers would take seven hours to pick strawberries. How long would this work take if two more temporary workers were added after three hours?
  • Six identical
    balloon Six identical compressors inflate 180 balloons in one hour. How many balloons inflate one compressor in 10 minutes?
  • Deadline
    murar Five equally skilled masons built half the wall in 14 days. In order to meet the planned deadline, the remaining part must be built in 6 days. How many more masons need to be allocated for construction?
  • Jewelry factory
    diamonds In a jewelry factory, three assemblers make beaded necklaces.  Marcus can make 22 necklaces per hour all day long. Anita can make 25 necklaces for her first three hour of the days and then slow down to 16 necklaces for the rest of the day. Yara can make 2
  • Workshops
    workers The plant has three workshops. In the first workshop, produce 5 products/hour, in the second 8 products/hour, and in the third 7 products/hour. In the first workshop, they produced 240 products, in the second 400 and the third 350 products. Find the avera
  • Three
    work Three pavers will pave the sidewalk in 4 days. How long does it take for two tiles to pave the same sidewalk?
  • All tasks - taskman
    clocks Skilled workshop master washes client car 1/5 hour, cleaned the client's car in 5/4 hour, and painted small defects on car 1 1/3 hour. How long did it take him to do all the necessary work tasks?
  • Together m+d
    painter Aunt Jane would paint her apartment in 10 hours, her mother in 15 hours. How much do they paint it for together?
  • Two companies
    workers Company A can fulfill the order in 12 days, company B the same order in 18 days. How many days will the order be fulfilled if only company A works on it for the first two days, then the remaining days for both companies two?
  • The mountain hut
    tourist The mountain hut has a supply of food for 8 tourists for 15 days. Half more were lost. How long will their food supply last if the daily ration remains the same?
  • Weighted harmonic average
    workers Ten workers will do some work in 2 minutes, five workers in 10 minutes and three workers in 6 minutes. How many minutes per average worker per worker?
  • Two xeroxes
    xerox The performances of the two copiers are in the ratio 3: 4. A machine with higher power will make 7,200 copies in one hour. How many copies will both machines make together in 5 hours?
  • Six painters
    painter Six painters paint an area of 120 m2 in 4 hours. How long does it take for 12 painters to paint 480 m2 with the same performance?

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