Respuesta :
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 percentage of working phones changes if the eleventh and twelfth phones work correctly by 36.4% and 41.7%.
What is percentage?
A percentage serves as the number or ratio which can be used to give representation of a fraction of 100 with the symbol %.
With the assumption that eleventh phone is working, then it becomes 36.4% which is [tex]( 4/11 *100)[/tex]
With the assumption that the eleventh and twelfth are working , then the percentage becomes 41.7% which is [tex](5/12 *100% )[/tex]
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