santosrowan06 santosrowan06

01-02-2018
Mathematics

contestada

In seawater there is 5% of salt. How many liters of fresh water do you need to add to 30 liters of seawater to get a 1.5% solution of salt?

Respuesta :

zrh2sfo zrh2sfo

05-02-2018

Let x = amout of fresh water required
The amount of the salt remains the same
.05(30) = .015(x+30)
1.5 = .015x + .45

1.5 - .45 = .015x
1.05 = .015x
x = 1.05/.015
x = 70 liters of fresh water

check solution
.05(30) = .015(100)
1.5 = 1.5

Answer Link

Otras preguntas

when you subtract one negative integer from another will your answer be greater than or less than integer you started with? Explain your reasoning and give exa

Emma and Jamie used base ten blocks to show that 40 is one tenth of 400

what is 127,034 rounded to the nearest ten thousand

how do you do expanded form in three ways to the number 37,917,545

In which one of the following sentences does an adverb modify an adjective? a. Lucy danced tirelessly. b. His appearance greatly affected Candace. c. His shi

what are distinct factors of 100

What publication convinced colonists that it was time to make the break from Britain and create a new nation of their own?

Why do you suppose the population of deer declined in 1925, although the elimination of predators occurred?

The Aztecs established an empire in _____.

when you subtract one negative integer from another will your answer be greater than or less than integer you started with? Explain your reasoning and give exa