a mobile phone manufacturing plant is producing too many phones that do not work. the quality assurance team…

a mobile phone manufacturing plant is producing too many phones that do not work. the quality assurance team is investigating. 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.

a mobile phone manufacturing plant is producing too many phones that do not work. the quality assurance team is investigating. 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

Explanation:

Step1: Calculate initial number of working phones and total phones

Initial working phones = 3, initial total phones = 10.

Step2: Calculate new number of working phones and total phones

If 11th and 12th phones work, new working phones = 3 + 2=5, new total phones = 10 + 2 = 12.

Step3: Calculate new percentage of working phones

New percentage = $\frac{5}{12}\times100%\approx41.67%$.

Step4: Analyze the change

The percentage increases from 30% to approximately 41.67%.

Answer:

The percentage of working phones increases from 30% to approximately 41.67%.