maddysarah maddysarah

01-03-2016
Mathematics

contestada

How much pure acid should be mixed with 6 gallons of a 60% acid solution in order to get an 80% acid solution?

Respuesta :

apologiabiology apologiabiology

01-03-2016

so pure=100%
x added

100%=1=pure

amount times purity=result

x=amount added
x times 1
6-x times (0.6) for te 60%
they add up to
6 times 0.8
solve
x+(6-x)0.6=6(0.8)
x=3

answer is 3 gallons replaced with 100% acid

Answer Link

Otras preguntas

what are four kinds of music that the south is known for in the United States

In one year, the McAlister family drove their car 15,680 miles. To the nearest thousand, how many miles did they drive their car that year?

What is 11.875 as a fraction

The population of a town increases at the rate of 1% each year. today the town’s population is 8,500. what will the population be in five years?

help with #19 plzzz!!!???

how does organizing the past by period differ from organizing the past by theme

_______ is the sharing of meaning by sending and receiving symbolic cues. speaking hearing communication reading

-4 (2x - 5) 1. -8x + 20 2. -8x +9 3. -8x - 5 4. -8x - 20

This is from the Diary of Anne Frank. Which best explains the difference between Anne's and Mr. Frank's viewpoints? A. Mr. Frank believes the burglars will be

Is -9 a rational or irrational number