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This is a Clilstore unit. You can link all words to dictionaries.

Układ równań- system of equations

  1. A system of equations is a collection of two or more equations with the same set of unknowns. In solving a system of equations, we try to find values for each of the unknowns that will satisfy every equation in the system.

 

 

 

 

 

 

 

Tasks

1. Collins Company manufactures sofas and armchairs. During year 2003, it manufactured a total of 480,000 sofas and armchairs. If the number of the armchairs produced   were 11200 more than the number of sofas, find the number of each product manufactured during year 2003.

2. BUSINESS Laura’s Copies has two options for buying photocopies. With Option 1, you can buy a card for $40 each year and then pay $0.03 per copy. With Option 2, you can just pay $0.05 per copy. For how many copies would the cost of Options 1 and 2 be the same? What is the cost?

3. Five-year-old Derek was visiting his grandmother’s farm, and he decided to practice counting by counting the animals in one of the fields and also the feet of those animals. He counted 8 animals and 20 feet; some animals were cows and some were chickens. How many cows were in the field? How many chickens?

4. George is 5 times as old as his son. In 15 years he will be only twice as old as his son. How old will his son be in 15 years?

5. One number is two more than three times another. The sum of the numbers is 26.What is the lesser number?

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