Question

Someone plz helpppp

A chemistry teacher needs to mix a 40% salt solution with a 70% salt solution to make 25 qt of a 52% salt solution. How many quarts of each solution should the teacher mix to get the
desired result?
40% salt solution=?qt
70% salt solution=?qt

Answer 1

Answer:

Step-by-step explanation:

We assume we need x qt of 40% and y qt of 70%

40/100 x + 70/100 y = 52/100 (x+y)

So 3y = 2x, which means y = 2/3x

And we know that x + y = 25qt

So x + 2/3x = 25qt

So x = 15 and y = 10