Production shows that only 3 of the first 10 phones are working, which is 30% of the phones. describe how the percentage of working phones changes if the eleventh and twelfth phones work correctly.

If the eleventh phone is working correctly, the percentage increases to:

4/11 = approximately 36.4%

If the eleventh and twelfth phones are working, the percent increases to:

5/12 = approximately 41.7%

the answer is 5/3x+7/5y+7

0.85 or 85%

step-by-step explanation:

1) divide 23 by 27

2) round the decimal to the nearest 10

3) so your answer would be 0.85 or 85%