Question

The average 12 -to- 17 -year-old spends 645 minutes per month on a personal computer. This is 732 fewer minutes per month than the average 18 -to- 24 -year-old spends. How many minutes per month does the average 18 -to- 24 -year-old spend on a personal computer? D Source: Media Matrix

Short answer

The average 18 to 24-year-old spends 1377 minutes per month on a personal computer.

Step-by-step solution

Identify the known variables

The average 12 to 17-year-old spends 645 minutes per month on a personal computer. This is 732 fewer minutes per month than the average 18 to 24-year-old spends on a personal computer.

Write an equation based on the problem

Let \(x\) be the number of minutes the average 18 to 24-year-old spends on a personal computer. The problem states that 'This (645 minutes) is 732 fewer minutes per month than the average 18 to 24 -year-old spends' which can be translated to \(x = 645 + 732\) minutes.

Solve the equation

Solving the equation gives \(x = 1377\) minutes.