About my printing press?

Printing press A can print an order in 7 hrs.?

  • If printing press B is used along with press A, the job can be completed in 5 hrs. How long would it take printing press B to print the order by itself? And also how do you do you figure it out?

  • Answer:

    Press A = 1/7 Press B = 1/x since there is no known time span, Total A+B = 1/5 1/7 +1/x = 1/5...multiply both sides by denominators and cross cancel as needed. (7)(x)(5)(1/7+1/x) = (7)(x)(5)(1/5) 5x +(7•5) = 7x 5x+35 = 7x 5x-5x+35 = 7x-5x 335 = 2x 35/2 = x 17.5 hrs. = x. Press B.

Jess at Yahoo! Answers Visit the source

Was this solution helpful to you?

Just Added Q & A:

Find solution

For every problem there is a solution! Proved by Solucija.

  • Got an issue and looking for advice?

  • Ask Solucija to search every corner of the Web for help.

  • Get workable solutions and helpful tips in a moment.

Just ask Solucija about an issue you face and immediately get a list of ready solutions, answers and tips from other Internet users. We always provide the most suitable and complete answer to your question at the top, along with a few good alternatives below.