Answer fast By checking time records, a plumber finds that worker A can do a certain job in 12 hours. Worker B can do the same job in 9 hours. How many hours would the job take if the two plumbers worked together?

my options are 5 7}" /> and 6

i think its either 5 or 6

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.