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A scientist mixes water (containing no salt) with a solution that contains 35 % salt. She wants to obtain 245 ounces of a mixture that is 5 % salt. How many ounces of water and how many ounces of the 35 % salt solution should she use?

Respuesta :

alejandrocampos54

Answer:

Step-by-step explanation:

W = Water

S = 40% salt (if available)

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W + S = 200

w*0 + s*40 =(w+s)*s

40s=5W + 55

5w = 355

w=200 -s

5(200-s) =355

1000 - 5 s =35s

40s =1000

s= 25

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