A gardener prepares a mixture of fertilizer with concentration, by volume, equal to Y. It is prepared by mixing a volume of fertilizer given by A with a volume of water given by W. The expression above represents the mixture described. What physical quantity does the term A + W represent in the equation above?
A. The volume of the mixture
B. The mass of fertilizer added
C. The volume of the fertilizer in the mixture
D. The concentration of the fertilizer
Answer:A
A gardener prepares a mixture of fertilizer with concentration, by volume, equal to Y. It is prepared by mixing a volume of fertilizer given by A with a volume of water given by W. The expression above represents the mixture described. What physical quantity does the term A + W represent in the equation above?
A. The volume of the mixture B. The mass of fertilizer added C. The volume of the fertilizer in the mixture D. The concentration of the fertilizer
Explanation: A Use Process of Elimination to solve this question. Choice (A) is possible so leave it. Choice (B) discusses the mass of the fertilizer, but no reference to mass is made in the question. Eliminate (B). According to the question, the quantity described in (C) is represented by A, so eliminate (C). According to the question, the quantity described in (D) is represented by Y, so eliminate (D). The correct answer is (A).