EIAT - Elevator Industry Aptitude Percentages and Word Problems Questions and Answers

Question 1

A technician inspects a batch of 80 hoisting ropes. 12 of the ropes are found to have unacceptable wear and must be replaced. What percentage of the ropes needed replacement?

Accepted Answer

15%

Answer

To find the percentage, divide the number of ropes needing replacement (12) by the total number of ropes inspected (80) and then multiply by 100. The calculation is (12 / 80) * 100 = 0.15 * 100 = 15%.

Question 2

A new elevator installation requires 320 feet of electrical conduit. Due to a change in the building's layout, the required length is increased by 25%. What is the new total length of conduit required?

Accepted Answer

400 feet

Answer

First, calculate the amount of the increase, which is 25% of 320 feet. This is calculated as 0.25 * 320 = 80 feet. Then, add this increase to the original length to find the new total: 320 + 80 = 400 feet.

Question 3

A service company charges $2,500 for a standard annual maintenance contract. They offer a 10% discount for customers with more than five elevators. A building owner with six elevators also gets an additional 5% discount on the discounted price for paying a year in advance. How much does the building owner pay for the contract?

Accepted Answer

$2,137.50

Answer

First, calculate the 10% discount: $2,500 * 0.10 = $250. The price becomes $2,500 - $250 = $2,250. Next, calculate the additional 5% discount on this new price: $2,250 * 0.05 = $112.50. The final price is $2,250 - $112.50 = $2,137.50.

Question 4

After a 20% reduction in staff due to a slowdown, an elevator service branch now has 48 technicians. How many technicians did the branch have before the reduction?

Accepted Answer

60

Answer

If there was a 20% reduction, the remaining 48 technicians represent 80% (100% - 20%) of the original staff. Let the original number be 'x'. The equation is 0.80 * x = 48. To find x, divide 48 by 0.80, which equals 60.

Question 5

An older elevator model had a maximum speed of 300 feet per minute (fpm). A modernization project replaced the motor and controls, increasing the maximum speed to 375 fpm. What was the percentage increase in the elevator's speed?

Accepted Answer

25%

Answer

The formula for percentage increase is ((New Value - Original Value) / Original Value) * 100. The increase in speed is 375 - 300 = 75 fpm. The percentage increase is (75 / 300) * 100 = 0.25 * 100 = 25%.

EIAT - Elevator Industry Aptitude Test Practice Test

EIAT - Elevator Industry Aptitude Test Practice Test

EIAT - Elevator Industry Aptitude Percentages and Word Problems Questions and Answers