forty liters of a 60% disinfectant solution are to be mixed with a 20% solutionto dilute it to a20% solution. How much of the 10% solution must be used

forty liters of a 60% disinfectant solution are to be mixed with a 20% solutionto dilute it to a20% solution. How much of the 10% solution must be used

This word problem is part of our weekly set of problems and I'm sure I have the right answer but it keeps telling me I'm wrong so I was hoping to see what I'm doing wrong and get the right answer...

This is a question that I need to be answered ASAP. It's simple but i don't know the work.

The length of a certain rectangle is six more than three times its width. If the width of the rectangle is 4 units, what is its length?

what is the length of the blueprint?

A. Write a function, V, that models the value of the bond t years after it is purchased. B. What is the value of the bond 2 years after it is purchased?

Four lengths measuring 6 1/4 inches, 9 3/16 inches, 7 1/8 inches and 5 9/32 inches are cut from 48 inches of cable. How much is left?

George's page contains twice as many typed words as Bill's page and Bill's page contains 50 fewer words than Charlie's page. If each person can type 70 words per minute, after one minute, the...

Kenya plans to make a down payment plus monthly payments in order to buy a motorcycle. At one dealer she would pay $2,450 down and $175 each month. At another dealer, she would pay $3,050 down and...

We need to find out when does the ash projectile reach its maximum height. What is the maximum height. Last, when does the ash projectile reach the ground. H=height in feet T=...

Xian and his cousin Kai both collect stamps. Xian has 64 stamps, and Kai has 68 stamps. The boys recently joined different stamp-collecting clubs. Xian's club will send him 12 new stamps per month...

Nicole and Adam are each saving money for a car. The total amount of money Nicole will save is represented by the function f (x) = 36 + 4x . The total amount of money Adam will save is given by...

I need to use a system of linear equations to solve this. I have another question that i'm stuck on

solve

it is an algebra word problem

the length of a rectangle is 5 m greater than the width. The perimeter is 150 m. Find the width and length

the 2 questions that go along with it are A.) Write an inverse variation equation that relates c and n. B.) How much does each person pay when 8 people fish?

i have one day pls help

please help!!!

The 42km drive from Oakdale to Ridgemont usually takes 28 min. Because of highway construction requires a reduced speed limit, the trip now takes 14 min linger. Find the reduced speed limit in km...