EIAT Fractions and Decimals Computation 3 — Questions and Answers
Question 1: A hoist rope stretches 0.125 inch under load. Express this as a fraction in lowest terms.
- 1/8 inch (Correct answer)
- 1/4 inch
- 1/16 inch
- 5/40 inch
Correct answer: 1/8 inch
0.125 = 125/1000 = 1/8 in lowest terms.
Question 2: Three shims measure 3/16, 5/16, and 7/16 inch. What is their total thickness?
- 15/16 inch (Correct answer)
- 1 inch
- 7/8 inch
- 13/16 inch
Correct answer: 15/16 inch
3/16 + 5/16 + 7/16 = 15/16 inch.
Question 3: An inspection takes 0.3 hours per floor and a building has 15 floors. How many hours total?
- 4.5 hours (Correct answer)
- 4.0 hours
- 5.0 hours
- 3.5 hours
Correct answer: 4.5 hours
0.3 × 15 = 4.5 hours.
Question 4: A pulley has a diameter of 2 1/4 inches. Its radius is:
- 1 1/8 inches (Correct answer)
- 1 1/4 inches
- 1 inch
- 1 3/4 inches
Correct answer: 1 1/8 inches
Radius = 2 1/4 ÷ 2 = 9/4 ÷ 2 = 9/8 = 1 1/8 inches.
Question 5: A lubricant costs $3.60 per quart. How much do 2.5 quarts cost?
- $9.00 (Correct answer)
- $8.50
- $9.50
- $8.00
Correct answer: $9.00
$3.60 × 2.5 = $9.00.
Question 6: A wire rope has a safe working load of 4/5 of its breaking strength. If breaking strength is 5,000 lbs, the safe load is:
- 4,000 lbs (Correct answer)
- 3,500 lbs
- 4,500 lbs
- 3,800 lbs
Correct answer: 4,000 lbs
4/5 × 5,000 = 4,000 lbs.
Question 7: A shaft is machined down from 2.500 inches to 2.375 inches. How much material was removed?
- 0.125 inch (Correct answer)
- 0.150 inch
- 0.100 inch
- 0.175 inch
Correct answer: 0.125 inch
2.500 − 2.375 = 0.125 inch removed.
EIAT Fractions and Decimals Computation 3
A hoist rope stretches 0.125 inch under load.
Express this as a fraction in lowest terms.