Solve.
-Jane wants to buy a photocopier. The salesperson 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) B is fastest; 100 minutes
B) C is fastest; 100 minutes
C) A is fastest; 120 minutes
D) C is fastest; 120 minutes

Question

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The Answer of Solve.
-Jane wants to buy a photocopier. The salesperson 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) B is fastest; 100 minutes
B) C is fastest; 100 minutes
C) A is fastest; 120 minutes
D) C is fastest; 120 minutes

Solve. -Jane Wants to Buy a Photocopier. the Salesperson Has the the Following