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

Answer:

Percentage of computers working equals:

90%

Step-by-step explanation:

Three of the thirty computers are out of service.

Number of computers working=30-3=27

Total computers=30

Percentage of working computers= $\dfrac{Number\ of\ computers\ working}{Total\ computers}\times 100$

                                                        =  $\dfrac{27}{30}\times 100$

                                                        = 90%

Hence, Percentage of computers working is:

90%