Question

Three of the thirty computers are out of service.What percent of the computers are working?

Answer 1

3/30
You have to divide so the answer is 0.1=
10%

Answer 2

Percentage of computers working equals:

90%

Explanation:

Three of the thirty computers are out of service.

Number of computers working=30-3=27

Total computers=30

Percentage of working computers=
`(Number\ of\ computers\ working)/(Total\ computers)* 100`

=
`(27)/(30)* 100`

= 90%

Hence, Percentage of computers working is:

90%