NCRC Applied Mathematics 2 — Questions and Answers
Question 1: A team of 4 workers can unload a truck in 6 hours. How long would it take 8 workers at the same rate?
- 4 hours
- 3 hours (Correct answer)
- 2 hours
- 5 hours
Correct answer: 3 hours
Doubling the workers halves the time: 6 ÷ 2 = 3 hours.
Question 2: A shop orders 144 items and sells them at $3.50 each. If each item cost $1.80, what is the total profit?
- $244.80 (Correct answer)
- $288.00
- $504.00
- $259.20
Correct answer: $244.80
Profit per item = $3.50 − $1.80 = $1.70; total profit = $1.70 × 144 = $244.80.
Question 3: Convert 5.25 hours into hours and minutes.
- 5 hours 20 minutes
- 5 hours 25 minutes
- 5 hours 15 minutes (Correct answer)
- 5 hours 30 minutes
Correct answer: 5 hours 15 minutes
0.25 hours × 60 minutes/hour = 15 minutes, so the answer is 5 hours 15 minutes.
Question 4: A cylindrical tank has a radius of 3 feet and a height of 10 feet. Using π ≈ 3.14, what is its volume?
- 282.6 cu ft (Correct answer)
- 94.2 cu ft
- 188.4 cu ft
- 301.0 cu ft
Correct answer: 282.6 cu ft
V = π × r² × h = 3.14 × 9 × 10 = 282.6 cubic feet.
Question 5: A paycheck shows gross pay of $920 and deductions totaling $217.40. What is the net pay?
- $712.60
- $702.60 (Correct answer)
- $703.40
- $702.40
Correct answer: $702.60
$920.00 − $217.40 = $702.60 net pay.
Question 6: If a machine produces 480 parts in 8 hours, how many parts does it produce per minute?
- 1 part/min (Correct answer)
- 2 parts/min
- 4 parts/min
- 3 parts/min
Correct answer: 1 part/min
480 parts ÷ 8 hours ÷ 60 minutes = 1 part per minute.
NCRC Applied Mathematics 2
A team of 4 workers can unload a truck in 6 hours.
How long would it take 8 workers at the same rate?