jahnuyadalaosdf93 jahnuyadalaosdf93
  • 09-06-2020
  • Mathematics
contestada

A chemist needs a 20% solution of alcohol. How many liters of 15% solution should be added to 4 liters of 40% solution to get a 20% solution?

Respuesta :

snog
snog snog
  • 09-06-2020

Answer:

16

Step-by-step explanation:

Let's call the liters x. We can write 0.15x + 0.4 * 4 = 0.2 (x + 4). When we solve for x we get x = 16 liters.

Answer Link

Otras preguntas

how do you do this problem 3x times x squared
Five elevenths times a number is 55
which of the following describes the role that enzymes play in the process of metabolism
Which container holds more, a half gallon milk jug or a 2-liter juice bottle?
Which macromolecules are polymers made of nucleotides
A scientist thought he may have discovered a new plant compound that would lower blood pressure in people. In his first experiment, he injected one hundred mice
The school theater department made $2,142 and the department sold the same number of tickets each night and each ticket cost $7.How many tickets did the thea
Is 27/51 equal to 18/34
Is 27/51 equal to 18/34
Which of the following is true of the Antarctic Treaty System? A. Members came from the Antarctic Agreement. B. It allows limited weapons testing of the contine