Maths

45. 46. 47. 49. A shipment of 320 cell phones and radar detectors was destroyed due to a truck accident. On the insurance claim, the shipper stated that each phone was worth $110, each detector was worth $160, and their total value was $40 700. How many of each were in the shipment? TWO types of electromechanical carburetors are being assembled and tested. Each of the rst type requires 15 min of assembly time and 2 min of testing time. Each of the second type requires 12 min of assembly time and 3 min of testing time. If 222 min of assembly time and 45 min of testing time are available, how many of each type can be assembled and tested, if all the time is used? A machinery sales representative receives a xed salary plus a sales commission each month. If $6200 is earned on sales of $70 000 in one month and $4700 is earned on sales of $45 000 in the following month, what are the xed salary and the commission percent? . A moving walkway at an airport is 65.0 m long. A child running at a constant speed takes 20.0 s to run along the walkway in the direction it is moving, and then 52.0 s to run all the way back. What are the speed of the walkway and the speed of the child? A boat carrying illegal drugs leaves a port and travels at 63 km / h. A Coast Guard cutter leaves the port 24 min later and travels at 75 km / h in pursuit of the boat. Find the times each has travelled when the cutter overtakes the boat with drugs. See Fig. 5.31. Leaves 24 min later