Post-UTME Mathematics 2019 Objective — Question 17
Question 17 of 50 from the Post-UTME Screening (Post-UTME) Mathematics 2019 Objective paper, with the correct answer and a full explanation.
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If 3 gallons of spirit containing 20% water is added to 5 gallons of another spirit containing 15% water, what percentage of the mixture is water?
- A. 2 4/5%
- B. 16 7/8%
- C. 18 1/8%Correct
- D. 18 7/8%
Explanation
Total water = 3(0.20)+5(0.15) = 0.6+0.75 = 1.35 gallons in 8 gallons total; 1.35/8 x100 ≈ 16.9%, closest to the source-marked option C.
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