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

Triangle PQR is reflected over the x axis.What are the coordinates of Q’

Identify and explain two outcomes of the implementation of the Phoenician alphabet on the Mediterranean region leading up to the collapse of the Bronze Age

2x = 4 2x - 4 = 8y stancard form

Kyle cut a 4 foot piece of rope into pieces that are 0.25 feet long how many pieces of rope did he cut?

In which situation is the object experiencing unbalanced forces? Question 1 options: A. A box resting on a horizontal floor B. A car slowing as it reaches a sto

Which of the following lines is parallel to x = 4 O 1) 3y = 9 O 2) y = 4 O 3) x = 2 O4) x = y

if john can buy 8 liters of soft drinks at the store for $6.40 how much does it cost to buy 12 liters

(High school Sociology) The United States has an open class system based on social mobility that includes a. horizontal mobility. c. intergenerational mobili

Madison says that 579 . 8 × 0 . 001 is the same as 579 . 8 ÷ 10 3 . Is she correct? Explain your answer. 01

(–x^2y^3m)^5 write the monomial in standard form