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IKMC 2027 - Grades 7-8 - Self-study SET 12 - Thematic Batch 3 Question 22

IKMC · IKMC 2027 - Grades 7-8 - Self-study SET 12 - Thematic Batch 3

Question 22

Mr Farmer uses two tanks of equal size for irrigation. They currently contain 1000 litres and 1200 litres. Water is used at 10 litres per hour from the first and 30 litres per hour from the second. After how many hours will the amounts be equal, if no water is added?

Editorial interpretation: Find the first time the amounts become equal, while both tanks still hold water.

Question illustration
  1. 3 hours
  2. 5 hours
  3. 6 hours
  4. 9 hours
  5. 10 hours