What quantity of 75% acid solution must be mixed with 25% solution to produce 720 ml of a 50% solution

Step-by-step explanation:

and

both volumes combined makes the last solution...

and

now...

0.5x+0.5y=0.75x+0.25y

0.25y=0.25x

x=y

it means both volumes are same

so volume of acid must be 720/2=360mL

plug that number in to x and y

if u didnt get how i got the answer...comment me

hello i am doing good for you that it's summer in your country or state ; )

btw in my country we just have sun and rain as (because i live in the caribbean lol)

also, thx a lot for the points : )

the answer is 62.8 cubic units