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WAEC Agricultural Science 2008 Question 38

Question 38

Weeds and Weed Control

Determine the number of bottles of a herbicide required to spray 25 hectares of farmland, if one bottle is needed to prepare 100 litres and the diluted product is applied at a rate of 20 litres per hectare.

  1. A.2 bottles
  2. B.5 bottles
  3. C.8 bottles
  4. D.11 bottles.
Show the answer and explanation

Answer: B (5 bottles)

Explanation

25 × 20 = 500 litres; 500 ÷ 100 = 5 bottles.