melishaydari2001 melishaydari2001
  • 24-06-2020
  • Mathematics
contestada

Three packages of pens and one box of paper cost $26. Two packages of pens and 7 boxes of paper cost $49. How much does one box of paper cost?

Respuesta :

osikbro
osikbro osikbro
  • 24-06-2020

Answer:

5 dollars

Step-by-step explanation:

Let's call the price of a package of pens n, and the cost of a box of paper r.

3n+r=26

2n+7r=49

Multiply the first equation by 7:

21n+7r=182

Subtract the second equation from the first:

19n=133

Divide both sides by 19 to isolate n:

n=7

Plug this back in to find the value of a box of paper:

3(7)+r=26

21+r=26

r=5

Hope this helps!

Answer Link

Otras preguntas

which weather condition commonly occurs along cold front?
How often does the U.S. House of Representatives redistribute seats? seats remain the same every two years every ten years every twenty years
The distance from the center of a round table top to the edge of the table top is 4 ft. What is the area of the table top? A. 50.24 sq. ft. B. 25.14 sq. f
how is paleontology related to geology
What is social security?
which weighs more 5 Ib or 100 oz
The Supreme Court is part of the Judicial Branch?
the weight of the lithosphere keeps the mantle in a semi-solid state. what can you infer from this?
Assign two variables for each problem, and write the equations. Do not solve. A basketball team stopped at a fast-food restaurant after a game. They divided int
Which of the following is not used by states to determine which delegates will attend the national convention? a. primary b. referendum c. caucus d. convent