Answer:
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Step-by-step explanation:
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Answer:
then subtitute x to find <FGH
You find the rates of each computer on its own...
One does the job in 55 minutes which we can say is 1/55
The other has a rate of 1/45.
The question wants to know how long it would take both working simultaneously to complete the job...
t/55+t/45=1
(9t+11t)/495=1
20t=495
t=24.75 minutes (24:15)
Answer is j(x) everything else i think is incorrect.
The answer is c) <span>60 + 18 = 6(10 + 3) </span>