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21-11-2017
Mathematics

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A certain solution of salt water is 10% salt and weighs 50 pounds. More salt must be added to produce a solution that is 25% salt.

If x represents the pounds of salt to be added, which of the following expressions represents the number of pounds of salt in the 25% solution?
A)0.25(x+50)
B) 0.25x
C) 1.25(x+50)

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Respuesta :

Аноним Аноним

21-11-2017

The solution is:
.1*50+x=.25(50+x) 5+x= 12.5+ .25x
x-.25x=12.5-5 .75x=7.5 x=7.5 or .75

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