Rachel is setting up a 20-gallon saltwater fish tank that needs to have a salt content of 3.5% If Rachel has a container of water that has 2.5% salt content and another container of water that has...

Rachel is setting up a 20-gallon saltwater fish tank that needs to have a salt content of 3.5% If Rachel has a container of water that has 2.5% salt content and another container of water that has...

if there are 24 grams of water and 4 grams of hydrogen, how many grams of oxygen will you have?

Big Dog sells a beef-based dog food for $2.30 per pound and a lamb-based food for $3.80 per pound. They sell a mixture of the two kinds of food for $2.90 per pound. Let b represent the amount...

This is a linear equation involving a mixture. I am unsure how to solve

One canned juice drink is 30% orange juice; another is 10% orange juice. How many liters should be mixed together in order to get 20L that is 21% orange juice?

what is the percent concentration of the resulting mixture? Round to the nearest tenth of a percent.

A student mixed 50ml of a 3% hydrogen peroxide solution with 30 ml of a 12% hydrogen peroxide solution. Find the percent concentration of the resulting mixture. Round to the nearest tenth of a percent...

A radiator contains 15 quarts of fluid, 10% of which is antifreeze. How much fluid should be drained and replaced with pure antifreeze so that the new mixture is 30% antifreeze?

i keep doing this one over and over and i must be not setting it up correctly.help! quesiton:how many liters of a 15% salt solution must be added to 2 liters of a 30% salt solution to yield a...

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