Question

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Answer 1

What's the question?

Answer 2

Show an equation and a solution for the problem. Arnold needs a 25% solution of nitric acid. He has 20 ml of a 30% solution. How many ml of a 15% solution should he add to obtain the required 25% solution?

Answer 3

i got the answer

Answer 4

20(.30)+.15x=.25(20+x) This the equation

Answer 5

The answer would 7.5 ml of a 15% solution

Answer 6

10

Answer 7

.

Answer 8

oh ya sorry x=10

Answer 9

Thanks You Guysss !!