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Question
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%?
15/2 gallons
17/2 gallons
19/2 gallons
8 13 gallons
ANSWER : 4
Descrption
<p>20% of 125 gal = 0.20 × 125 gallon = 25 gal water</p> <p>Lets add w gal water such that the water content is raised to 25% </p> <p>so, 25 + w = 0.25 (o 125 + w) </p> <p>25 + w = 31.25 + . 25w</p> <p>w - 0.25w = 31.25 - 25</p> <p>0.75 w = 6.25</p> <p>w = 8.33 বা 8 1/3</p>
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