SOLUTION: A computer consultant's time is billed at $90 per hour and his assistant's time is billed at $40 per hour. A customer recieves a bill for $3500. If the assistant worked 10 hours

Question 548995: A computer consultant's time is billed at $90 per hour and his assistant's time is billed at $40 per hour. A customer recieves a bill for $3500. If the assistant worked 10 hours less than the consultant, how much time did each bill?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = consultant's time
= assistant's time
given:

The consultant billed 30 hrs
The assistant billed 20 hrs
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