Q1. If 4 apples cost $12, how much do 6 apples cost (direct proportion)?
A1. $18.
Q2. If a car travels 100 miles in 2 hours, how long will it take to travel 150 miles (direct proportion)?
A2. 3 hours.
Q3. If 3 workers can complete a job in 9 hours, how long will it take 6 workers (indirect proportion)?
A3. 4.5 hours.
Q4. If 5 books cost $25, how much do 8 books cost (direct proportion)?
A4. $40.
Q5. If 2 machines take 10 hours to produce 200 items, how long will 4 machines take (indirect proportion)?
A5. 5 hours.
Q6. If 3 people can paint a house in 12 hours, how long will it take 6 people (indirect proportion)?
A6. 6 hours.
Q7. If 4 gallons of paint cover 800 square feet, how much area will 7 gallons cover (direct proportion)?
A7. 1400 square feet.
Q8. If a car uses 5 liters of fuel to travel 60 miles, how much fuel will it need to travel 180 miles (direct proportion)?
A8. 15 liters.
Q9. If 4 people can complete a task in 8 hours, how long will it take 8 people (indirect proportion)?
A9. 4 hours.
Q10. If 6 workers can dig a trench in 10 days, how long will 3 workers take (indirect proportion)?
A10. 20 days.
Q11. If 5 meters of fabric cost $30, how much do 8 meters cost (direct proportion)?
A11. $48.
Q12. If 7 printers print 490 pages in 7 hours, how long will 10 printers take (indirect proportion)?
A12. 4.9 hours.
Q13. If 3 people can build a wall in 15 days, how long will 9 people take (indirect proportion)?
A13. 5 days.
Q14. If 6 pencils cost $18, how much will 9 pencils cost (direct proportion)?
A14. $27.
Q15. If a train travels 300 miles in 5 hours, how long will it take to travel 450 miles (direct proportion)?
A15. 7.5 hours.