Plant Operator Selection System Test POSS: Mathematical Usage 4

Question 1

A gauge reads 3.75 on a scale of 0 to 10. What percentage of maximum is the reading?

Accepted Answer

37.5%

Answer

3.75 ÷ 10 × 100 = 37.5%.

Question 2

A machine uses 3.2 gallons of oil per day. How many gallons are needed for a 30-day month?

Accepted Answer

96 gallons

Answer

3.2 × 30 = 96 gallons.

Question 3

A temperature drops from 212°F to 98.6°F. By how many degrees did it drop?

Accepted Answer

113.4°F

Answer

212 − 98.6 = 113.4°F.

Question 4

An operator works 6.5-hour shifts and earns $22 per hour. What is the gross pay for one shift?

Accepted Answer

$143.00

Answer

$22 × 6.5 = $143.00.

Question 5

A chemical must be diluted at a 1:9 ratio (chemical to water). How many ml of chemical are needed for 900 ml of final solution?

Accepted Answer

90 ml

Answer

Chemical = 1/10 of total; 900 ÷ 10 = 90 ml.

Plant Operator Selection System Test Practice Test