Expand mobile version menu

Computer/ATM/Office Machine Repairer

salary graphic

AVG. SALARY

$38,660

education graphic

EDUCATION

1-2 years post-secondary training

job outlook graphic

JOB OUTLOOK

Decreasing

Real-Life Activities

Real-Life Math -- Solution

You're trying to find out how to back up files for 2 computers.

Part 1-- Computer Alpha

First you use a compression program:

1.9 : 1 = 25 : ?
25 Mb / 1.9 = 13.16 Mb

25 Mb is compressed into 13.16 Mb

13.16 Mb / 1.44 Mb per floppy = 9.14 floppy disks

You will need 10 disks to store the data.

2 minutes per disk x 10 disks = 20 minutes

It will take 20 minutes to store the data.

Part 2-- Computer Beta

Convert the amount of data on Beta to megabytes

1.2 gigabytes x 1,024 megabytes per gigabyte = 1,229 Mb

1.9:1 = 1,229 Mb : ?
1,229 Mb / 1.9 = 647 Mb

647 Mb / 1.44 Mb per floppy = 449 floppy disks

It will take 449 floppy disks to save the data.

2 minutes per disk x 449 disks = 898 minutes
898 minutes / 60 minutes per hour = 15 hours

It will take 15 hours to save the data.

Part 3

  1. You can use floppy disks to save the data on computer Alpha because it will only take 20 minutes.
  2. You are going to have to find another way to save the files on computer Beta. Otherwise, you would be sitting in Marlow's accounting office for 15 hours waiting for the files to copy!