Question

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.

Answer 1

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%

Answer 2

3/10 = 0.3 = 30%

if phones 11 and 12 work......5/12 = 0.416 = 41.6%
before u had 3 out of 10 working.....now u have 5 out of 12 working