Question

Solve the problem.

Brand X copier advertises that its copiers run 25% longer between service calls than its competitor. If Brand X copiers run 38,900 copies between services, how many copies would the competitor run?

48,625 copies

29,175 copies

31,120 copies

22,229 copies

Answer 1

The competitor will run 31,120 copies between service calls.

Explanation:

We need to find a number of copies "n" whose value is the sum between itself and its 25 percent and this sum is equal to the 38,900 copies that the Brand X copier run between copies. We can do that by resolving the next equation:

`n+0.25n=38900\\1.25n=38900\\(1.25/1.25)n=38900/1.25\\n=38900/1.25\\ n=31120\\`