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

(5x^2-17x-15)/x-4 divide and write it in form

Put parentheses around the adverb clause in this sentence "i will call as soon as he comes in"

Which of the following is NOT a name of one of the central features of Facebook?

Give me some presentages

Factors cousing self injury behaviors

Please can you help me with this questions. Thanks.

what is the point slope equation of the line with slope 3/2 that goes through the point (-3,5)

Mendel experimented with garden peas. One of the traits he looked at was texture of the pea coat. If we said the pea coat was smooth what are we looking at? A.

suppose a spherical snowball with a diameter of 6 centimeters is melted in a large bowl. the resulting water is then poured into a cone-shaped paper cup that is

In general, a plot of land goes to