Solve the problem.
-Jane wants to buy a photocopier. The salesman has the following information on 3 models. If all 3 are used, a specific job can be done in 50 minutes. If copier A operates for 20 minutes and copier B for 50 minutes, one-half
The job is finished. If copier B operates for 30 minutes and copier C for 80 minutes, three-fifths of the job is done.
Which is the fastest copier, and how long does it take for this copier to finish the whole job?
A) C is fastest; 100 min
B) A is fastest; 120 min
C) B is fastest; 100 min
D) C is fastest; 120 min
Correct Answer:
Verified
Q99: Solve the system of equations.
-4x + y
Q100: Solve the system of equations.
-3x - y
Q101: Solve the system. Q102: Solve the problem. Q103: Solve the system. Q105: Solve the system.
-
-Mike, Joe, and Bill are
-xy = 20 x +
-y = x 3x -
