Machines 2

Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar math problems:

1. Workers 2
   Worker dug the trench for 7 hours, another worker for 10 hours. They recruited to work even one worker more. Digging should be done for 2 hours. For how long would dig third worker alone?
2. Two tributaries
   Two tributaries of the pool fill it in 10 hours. One of the tributaries would fill 15 hours. How long would fill the first tributary?
3. Apprentice
   Worker and apprentice execute the work for 6 hours. Worker performs himself in 10 hours. How long do the work of an apprentice?
4. Three painters
   One painter would have painted the fence for 15 hours, the second in 12 hours. The plot had to be painted in four hours, so they called the third one, and all worked together. For what time would the third painter paint fence the fence alone?
5. Workers
   Group of workers washing half of the windows of the building in two hours. How long will take half the workers wash all the windows of the building?
6. 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
7. Mom and daughter
   Mother is 39 years old. Her daughter is 15 years. For many years will mother be four times older than the daughter?
8. Apples 2
   How many apples were originally on the tree, if the first day fell one third, the second day quarter of the rest and on tree remained 45 apples?
9. Factory
   In the factory workers work in three shifts. In the first inning operates half of all employees in the second inning and a third in the third inning 200 employees. How many employees work at the factory?
10. Family
    Mom is 42 years old and her daughters 13 and 19. After how many years will mother as old as her daughter together?
11. Pumps A and B
    Pump A fill the tank for 12 minutes, pump B for 24 minutes. How long will take to fill the tank if he is only three minutes works A and then both pumps A and B?
12. Six workers
    Six workers planned to repair the roof in 5 days. After two days, two workers get sick. How long will the remaining workers complete the roof at the same rate of work?
13. Walnuts
    x walnuts were in the mission. Dano took 1/4 of nuts Michael took 1/8 from the rest and John took 34 nuts. It stayed here 29 nuts. Determine the original number of nuts.
14. Two ages
    Gabrielle is 9 years younger than Mikhail. The sum of their ages is 87. What is Mikhail's age?
15. Painters
    One painter could paint a school for 7 days. The second one for 6 days. It was necessary to paint the school in two days. Next painter was invited and all worked together. How long would this painter painted the school itself?
16. Fifth of the number
    The fifth of the number is by 24 less than that number. What is the number?
17. 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?