5m( 3n + 7y ) - 2k( 3n + 7y ) = ( 3n + 7y )( 5m - 2k ).
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:
y=-4/3x
Step-by-step explanation:
Hey I don’t know much of this but I really recommend you to re ask this question but choose the other option to talk to an expert :)