Please someone brilliant answer this!!! Eighteen plumbers can install 540 water lines in six weeks. How long will it take twelve plumbers to install the same number of lines?

9 weeks

Step-by-step explanation:

540 divided by 18 is 30

30 divide by 5 days in a work week is 6 weeks

540 divided by 12 is 45

45 divided by 5 days in a work week is 9 weeks

a work week don't consist of weekends

if im undersanding the question correctly, its organized from 10

step-by-step explanation:

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.