4000 QUESTION WITH DETAILS ANSWERS Flashcards
How many rows can a construction crew make with 240 bricks if they use 12 bricks per row?
20
Total bricks ÷ bricks per row = 240 ÷ 12 = 20 rows.
How much does a worker earn in a week if he earns $15 per hour and works 40 hours?
$600
Weekly earnings = hourly rate × hours worked = $15 × 40 = $600.
How many miles per gallon does a car achieve if it travels 150 miles on 5 gallons of gas?
25 mpg
Miles per gallon = total miles ÷ gallons = 150 ÷ 5 = 25 mpg.
What is the sale price of a jacket that originally costs $50 with a 20% off sale?
$40
Discount = original price × 20% = $50 × 0.20 = $10. Sale price = $50 - $10 = $40.
What is the total charge if a plumber charges $75 for a service call and $50 per hour for 3 hours of work?
$225
Total charge = service fee + (hourly rate × hours) = $75 + ($50 × 3) = $225.
If a recipe calls for 3 cups of flour for every 4 cups of sugar, how much flour is needed for 12 cups of sugar?
9 cups
Using a ratio, (3 cups flour / 4 cups sugar) × 12 cups sugar = 9 cups flour.
What is the discounted price of a bike originally sold for $120 with a 15% discount?
$102
Discounted price = $120 × 0.85 = $102.
What is the average speed of a car that travels 300 miles in 5 hours?
60 mph
Average speed = distance ÷ time = 300 ÷ 5 = 60 mph.
What is the sale price of a laptop that is originally priced at $800 and marked down by 15%?
$680
Sale price = $800 - (800 × 0.15) = $800 - $120 = $680.
How much does a construction worker earn if he works 50 hours in a week, earning $15 per hour for the first 40 hours and $22.50 for additional hours?
$700
Weekly earnings = (40 × $15) + (10 × $22.50) = $700.
How many meals does a restaurant serve in a day if it serves 120 meals in one hour and operates for 8 hours?
960
Meals served = 120 × 8 = 960.
If a pair of shoes costs $60 and is discounted by 10%, what is the final price?
$54
Discounted price = $60 - ($60 × 0.10) = $54.
What is the sale price of a shirt originally priced at $40 that is marked down by 25%?
$30
Discount = $40 × 0.25 = $10. Sale price = $40 - $10 = $30.
What is the fuel efficiency in miles per gallon if a vehicle travels 300 miles on 10 gallons of gas?
30 mpg
Miles per gallon = 300 ÷ 10 = 30 mpg.
What are the weekly earnings of a worker who earns $12 per hour and works 35 hours?
$420
Weekly earnings = $12 × 35 = $420.
How many units does a machine produce per hour if it produces 200 units in 5 hours?
40
Units produced per hour = total units ÷ hours = 200 ÷ 5 = 40.
What is the sale price of a backpack originally costing $80, with a 20% discount?
$64
Discounted price = $80 - ($80 × 0.20) = $80 - $16 = $64.
How much is saved by buying 3 notebooks at a discount price of $4.00 instead of individually priced at $1.50 each?
$0.50
Buying individually costs $1.50 × 3 = $4.50. The discount price is $4.00, so the savings is $4.50 - $4.00 = $0.50.
How many boxes are needed to hold 1,000 items if each box holds 250 items?
4
Boxes needed = 1,000 ÷ 250 = 4.
What is the total charge if a plumber charges $50 for the first hour of work and $30 for each additional hour, and the job takes 4 hours?
$140
Total charge = $50 + ($30 × 3) = $140.