Question

Problem Page It takes an older computer 4 times as long to send out a company's email as it does a newer computer. Working together, it takes the two computers 15 minutes to send out the email. How long will it take the newer computer to send out the email on its own?

Answer 1

Answer:3 minutes

Step-by-step explanation:

Answer 2

Answer:

1. Time with Older Computer (OC) = 2 time with New Computer (NC)

2. OC+ NC = 10 MIN.

replacing 1. in 2.    OC + OC/2 = 10 min.  

1.5 OC =10min

OC=6.66 MIN

NC = 3,33 MIN.

If we replace NC with OC , 3,33 min will take 2 times (6,66 min)

Total Time = 6,66 + 6,66= 13,33 min