Plant Operator Selection System Test POSS: Mathematical Usage 5

Question 1

A plant produces 4,800 units per day. If production increases by 12.5%, how many units will be produced per day?

Accepted Answer

5,400 units

Answer

4,800 × 1.125 = 5,400 units.

Question 2

A fuel tank is 9/10 full and holds 450 gallons when full. How many gallons are currently in the tank?

Accepted Answer

405 gallons

Answer

450 × 9/10 = 405 gallons.

Question 3

Equipment costs $3,600 and depreciates evenly over 5 years. What is the annual depreciation?

Accepted Answer

$720

Answer

$3,600 ÷ 5 = $720 per year.

Question 4

A flow rate is measured at 15,000 liters per hour. What is the flow rate in liters per minute?

Accepted Answer

250 L/min

Answer

15,000 ÷ 60 = 250 liters per minute.

Question 5

If the average of four pressure readings is 38 PSI, and three of the readings are 35, 40, and 42 PSI, what is the fourth reading?

Accepted Answer

35 PSI

Answer

Total = 38 × 4 = 152; 152 − 35 − 40 − 42 = 35 PSI.

Plant Operator Selection System Test Practice Test