Achemist has 100ml of 25% acid solution. how much of the solution does she need to drain and replace with 70% acid solution to obtain 100ml of 60% acid solution?

77.78

Step-by-step explanation:

i had this ? on rsm student portal.

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x