1) John's sales last week were $251 less than three times Nancy's sales. Together they sold $1123. Determine how

1) John's sales last week were $251 less than three times Nancy's sales. Together they sold $1123. Determine how

much each person sold last week.   

2) A restaurant holds 50 seats. Two types of seats are available the Friday night jazz festival: stage and dining. The cost of a stage is $15.00 and the cost of a dining is $5.00. If all 50 seats are sold the restaurant would collect $400.00. How many of each type of seat is available?  

3) A polishing machine requires 1 hours to make a unit of Product A, and 4 hours to make a unit of Product B. The polishing machine operated for 200 hours producing a total of 80 units. How many hours were used to manufacture units of Product A? 

4) Edgar and Janet divide a profit of $15 700. If Janet is to receive $4200 more than one-fifths of Edgar's share, how much will Edgar receive?