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)

Question

Ada Gomez

Mathematics

3 July, 15:56

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)

+2

Answers (1)

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Serena · Answer 1

Answer

7.5 pounds

Step-by-step explanation:

Since adding x grams of salt will bring th percentage of the salt to 25

Hence. 10% of the 50 gram gives. 5 gram initial salt before it is added.

5 + x / 50 * 100 = 25/

5+x / 50 = 0.25

5+x = 12.5

X = 12.5 - 5

X = 7.5pounds