EIAT Percentages and Word Problems 4

Question 1

A pulley system multiplies force by 300%. If the input force is 150 lbs, what is the output force?

Accepted Answer

600 lbs

Answer

300% of 150 = 3.00 × 150 = 450 lbs output — wait: multiplies BY 300% means output = 300% × 150 = 450 lbs. The answer is 450 lbs.

Question 2

In a batch of 80 relay switches, 7.5% are found defective. How many switches are defective?

Accepted Answer

6

Answer

7.5% of 80 = 0.075 × 80 = 6 defective switches.

Question 3

An elevator modernization project was budgeted at $85,000 but came in 12% over budget. What was the actual cost?

Accepted Answer

$95,200

Answer

$85,000 × 1.12 = $95,200.

Question 4

A building's elevator log shows 840 trips on Monday and 630 trips on Tuesday. By what percentage did trips decrease?

Accepted Answer

25%

Answer

(840 − 630) ÷ 840 × 100 = 210 ÷ 840 × 100 = 25%.

Question 5

A lubricant costs $4.80 per quart. A job requires 2.5 gallons. At $4.80 per quart (4 quarts per gallon), what is the total lubricant cost?

Accepted Answer

$48.00

Answer

2.5 gallons × 4 quarts/gallon = 10 quarts; 10 × $4.80 = $48.00.

EIAT - Elevator Industry Aptitude Test Practice Test