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1. 125 gallons of a mixture contains 20% water . What amount of additional water should be added such that the water content is raised to 25%?
- A. 15/2 gallons
- B. 15/2 gallons
- C. 15/2 gallons
- D. 15/2 gallons
Answer: Option D
Explanation:
20% of 125 gal = 0.20 × 125 gallon = 25 gal water
Lets add w gal water such that the water content is raised to 25%
so, 25 + w = 0.25 (o 125 + w)
25 + w = 31.25 + . 25w
w - 0.25w = 31.25 - 25
0.75 w = 6.25
w = 8.33 বা 8 1/3
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