Together 3

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Next similar math problems:

1. Three painters
   The three painters have painted bridge. The first would work done in 5 days, the second in 6 days, and the third in 7.5 days. How long will the bridge work if they work together?
2. Soldier
   An experienced soldier digs a good trench in 30 hours. Two soldiers dug the same trench each 40 hours. How many hours will the ditch dig all three together?
3. Evening shift
   While working the evening shift, Officer K took 8 hours to complete a task at his work station and Officer M took 10 hours to complete the same task at his work station. How many hours would it take Officer K and Officer M to complete the same task working
4. Mow the lawn
   Dano would mow the lawn in 12 hours and Milada in 16 hours. How long will take the lawn mow together?
5. Two diggers
   There are two diggers. One digger digs a pit 46 hours second gidding 2 times faster. a) how long took to dig a pit second digger b) how long took dig together
6. Flowerbed
   Ondra digs the bed in 20 minutes. Cuba in 30 minutes. For how long do they dig together?
7. Working together on project
   Two employees working on the project. First make it alone for 20 days the second for 24 days. How many days will take to complete project if 5 days they work together then first will take two days holiday and after returning they completes a project toget
8. Workers
   Two workers fulfill a certain task when working together for 5 days, the first if he worked himself done work in 13 days. How many days will do whole job a second worker?
9. Pumping
   The tank is filled with a larger pump in 12 hours and with scond pump in 15 hours. For how long does the tank fill when both pumps are switched on at the same time?
10. Workers
    Two workers will construct the stage at the festival in 54 hours. Organizers need to shorten the assembly time by 42 hours. How many workers must the assembly company send?
11. Two machines
    The first machine can produce parts in 24 hours, the second in 16 hours. The first started working in the morning at 6:00 pm. Second at 10:00 o'clock. At what hour were all parts made?
12. Hectoliters of water
    The pool has a total of 126 hectoliters of water. The first pump draws 2.1 liters of water per second. A second pump pumps 3.5 liters of water per second. How long will it take both pumps to drain four-fifths of the water at the same time?
13. Workers 9
    If two workers fix two windows in an hour how many windows can 18 workers fix in the same two windows?
14. Construction of road
    For the construction of the road dam, it is supposed to transport six trucks a total of 18 days. After three days, two more cars were sent to the construction site. How long will it take to carry the material?
15. Greg and Bill
    Greg is 18 years old. He is 6 less than 4 times Bill's age. How old is Bill?
16. Simplify 2
    Simplify expression: 5ab-7+3ba-9
17. The factory
    The factory z can complete an order in 12 days, factory p in 18 days. For how many days does an order completed when the first two days work only the factory z and then both factories?