Question

A computer and printer cost a total of $1101. The cost of the computer is two times the cost of the printer. Find the cost of each item.

Cost of computer:

Cost of printer:

Answer 1

Cost of Computer: $734

Cost of Printer: $367

Explanation:

These two equations can represent the costs; x = price of computer; y = price of printer.

x + y = 1101

2y = x

If you graph these, you get an intersection point of (734, 367). This means that the only place that both equations are fulfilled is on (734, 367).

Then you can check your work:

734+367=1101

367*2=734