In an I-phone service center, clients arrive at the service-in-charge counter at the average rate of 15 clients per hour.

The service-in-charge can serve an average of 20 clients per hour.

Required:

1. Compute for the average number of clients waiting in line to be served.

2. Compute for the average number of clients in the waiting line, not being served.

3. Compute for the average waiting time.

Chofrancis sells eyeshield protective gears for industrial field. Each pack of eyeshield protective gear is sold for P380 during regular hours,

that is, from 7:30 am to 12:30 pm. If every pack is sold by 12:30 pm, Chofrancis calls it a day.

However, all unsold packs by 12:30 pm are sold at half the regular price up tp 5:30 pm.

The variable cost per box is P 150.

Required:

1. How much is contribution margin per pack from 7:30 am to 12:30 pm?

2. How much is loss per pack after 12:30 pm?