Plant Operator Selection System Test POSS: Mathematical Usage 3

Question 1

A storage tank has a volume of 800 cubic feet. If 1 cubic foot holds approximately 7.48 gallons, about how many gallons does the tank hold?

Accepted Answer

5,984 gallons

Answer

800 × 7.48 = 5,984 gallons.

Question 2

A plant runs for 16 hours a day, 5 days a week. How many hours does it operate in a 4-week month?

Accepted Answer

320 hours

Answer

16 × 5 × 4 = 320 hours per month.

Question 3

If pressure reads 45 PSI and must be reduced by 40%, what is the new reading?

Accepted Answer

27 PSI

Answer

45 × 0.40 = 18; 45 − 18 = 27 PSI.

Question 4

Three workers split a bonus of $1,245 equally. How much does each receive?

Accepted Answer

$415

Answer

$1,245 ÷ 3 = $415 each.

Question 5

A pipe delivers 12.5 gallons per minute. How long will it take to fill a 500-gallon tank?

Accepted Answer

40 minutes

Answer

500 ÷ 12.5 = 40 minutes.

Plant Operator Selection System Test Practice Test