A jeweler has five rings, each weighing 18 g, made of an alloy of 10% silver and 90% gold. She decides to melt down the rings and add enough silverto reduce the gold content to 75%. How much silver should she add?

Q: On a particular day the Juice Company used 820 oz of mango juice, 690 oz of pineapple juice, and 450…

A: A set of equations can be solved for the variables by using the substitution method. The value of…

Q: Mildred, a pharmacist, was required to prepare 10 L of a 40% alcohol solution by mixing the flowing.…

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Q: Six ounces of an insecticide are mixed with 15 gal of water to make a spray for spraying an orange…

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Q: How many vials of Lantus will you dispense for a 30 day supply if a patient injects 65 units…

A: It is given that patient injects 65 units and 10ml/vial=100 units/ml

Q: The beaker contained 400 mL of a solution that was 20% alcohol. How many milliliters of a 50%…

A: This question is based on percentage.

Q: Nine ounces of an insecticide are mixed with 15 gal of water to make a spray for spraying an orange…

A:

Q: How much water must be evaporated from 5 qt of a 45% antifreeze solution to produce a 75%…

A: To find amount of water to be evaporated from the 45% solution to produce 75% solution.let the…

Q: A chemist wants to make 50ml of a 16% acid solution by mixing a 13% acidsolution and an 18% acid…

A: Let he will use x ml of 13% solution and (50-x) ml of 18% solution. 13% of x= 0.13x And 18% of…

Q: In order to remove water from a flooded basement, two pumps, each rated at 40 gallons per minute,…

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Q: How much water should be added to 14ml of 10% alchohol solution to reduce the concentration to 7%?

A: let 'x' represent the amount of water, in ml, added, then the total volume of the solution becomes…

Q: How much salt is in the tank after 30 minutes?

A: From the sub part (a), the function is obtained as, y(t) =24e-t100. Therefore, calculate the amount…

Q: Five grams of sugar are added to a 45-gram serving of a breakfast cereal that is 10% sugar. What is…

A: Amount of sugar in a 45-gram serving

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Q: A vintner fortifies wine that contains 10% alcohol by adding a 70% alcohol solution to it. The…

A: The Final mixture is 1000 liters which is 16 x alcohol so, It contain 0.16 multiply 1000 = that is…

Q: A patient needs 1mg of a medication. The Australian Injectables Drug Handbook states that each gram…

A:

Q: A chemist needs to make 2 liters of a 15% acid solution from a 10% acid solution and a 35% acid…

A: Volume of 15% acid solution=2 liters

Q: If a child accidentally swallowed 2 fluidounces of FEOSOL Elixir, containing 2/3 gr of ferrous…

A: The unitary method is a very important method that is used in mathematics. When the value of a…

Q: 1. How many gallons of water are pumped out each hour? 2. How long will it take to empty the pool?…

A: Here as per POLICY I have calculated first 3 subpart only

Q: 4. Balsamic vinegar contains 5% acetic acid, so a 32-oz bottle of balsamic vinegar contains acid.…

A: Given- Balsamic vinegar contains 5% acetic acid. To find- The amount of acetic acid in a 32-oz…

Q: A fish company delivers 17 kg of salmon, 4.6 kg of crab, and 3.72 kg of oysters to your seafood…

A: A fish company delivers 17 kg of salmon, 4.6 kg of crab, and 3.72 kg of oysters to your seafood…

Q: A silversmith has two alloys, one containing 35% silver and the other 60% silver. How much of each…

A: A silversmith has two alloys, one containing 35% silver and the other 60% silver. How much of each…

Q: How many mililiters of pure chocolate must be added to 150 ml of chocolatetopping that is 50%…

A: Let x mililiters of pure chocolate must be added So the total amount of the mixture is (x+150) ml.…

Q: A jeweler has five rings, each weighing 18 grams, made of an alloy 10% silve r and 90% gold. He…

A:

Q: A chemist needs 60 milliliters of a solution that is 45% acid but has only 35% and 65% solutions…

A: Consider the needed amount is 60 ml of the 45% of the solution and the available amount is 35% and…

Q: A local shop sells ready-made custard at OMR1.45 for a special offer pack of three 425 g tins. It…

A: Mean: For a set of n observations, x1, x2, ... , xn, mean is given by,

Q: A patient needs 2mg of a medication. The Australian Injectables Drug Handbook states that each gram…

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Q: From 110 kg of solder metal containing half lead and half zinc, 22 kg is removed. Then 30 kg of lead…

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Q: A patient needs 4mg of a medication. The Australian Injectables Drug Handbook states that each gram…

A: The patient needs a medication of 4mg and as per Australian Injectables Drug Handbook 1 gram value…

Q: Jasmine is working on an experiment that calls for 4 cups of water and and cups of baking soda. What…

A: Consider the given information:

Q: Mother bought 5 kg of rice, 2 2/5 kg cooked for lunch and 1 1/4 kg cooked for dinner, how many…

A:

Q: A jeweler has five rings, each weighing 18 grams, made of alloy of 10% silver and 90% gold. He…

A: Given:A jeweler has five rings, each weighing 18 grams, made of alloy of 10% silver and 90% gold. He…

Q: When an urn is full of water it has a mass of 2900 grams. When the urn is half full of water it has…

A: Given Data: The total mass when the urn is full of water is: m1=2900 g The total mass when the urn…

Q: When the plutonium bomb was tested in New Mexico in 1945, approximately 1 gram of matter was…

A: Given query is to find the energy released.

Q: A chemist conducted an experiment on compounds. He mixed 30% of 8.46 grams of one compound with 75%…

A: Let's find.

Q: A gumbo recipe calls for 4 quarts of cooked rice and yields 80 servings, 6 ounces each. If the…

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Q: How many quarts of water must be added to 2 gal of soup that is 60% chicken broth to make the soup…

A: consider the equation

Q: there is 9 calories in 1 g of fat. how many calories are in 18 g of fat?

A:

Q: A batch of concrete consisted of 200lb fine aggregate, 350 lbs course aggregate, 94 lb cement and 5…

A: Given data: *The weight of the fine aggregate is 200 lbs. *The weight of the course aggregate is 350…

Q: How much water should be added to 26 ML of 19% alcohol solution to reduce the concentration of 13%?

A: Let amount of water to be added =x then 0.19*2626+x=0.13x=?

Q: A syrup is made by dissolving 3 cups of sugar in cups of boiling water. How many cups of sugar…

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Q: A carpet is made with a blend of wool and other fibers. If the concentration of wool in the carpet…

A: Consider the given information: Weight of carpet is 183 pounds. Concentration of wool in carpet is…

Q: The soil for house plants consists of  12% water. If someone wants to plant flowers that need 28%…

A: The soil already contains 12% water, so the weight of water in soil is 12% of 5 kg or 0.6 kg. Let x…

Q: If the caffeine concentration in a particular brand of soda is 2.87 mg/oz, drinking how many cans of…

A: The caffeine concentration in the soda of one can is 2.87 mg/oz. There are 12 oz in a can.  Hence,…

Q: Hall wrapped 4 presents every 8 minutes. At that rate, how long, in minutes, would it take to wrap 5…

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Q: your office is participating in a charity event for a local food bank. You will be making cinnamon…

A: Explanation of the answer is as follows

Q: If a recipe calls for - Ib of chicken per person and you bought the chicken in kilograms, how much…

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Q: The Hippo Tang fish at the zoo requires the 1100 gallon tank to be 8​% salt. After a period of​…

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Q: In an average year carnival cruise line puts more than 10.1×10^6 chocolate mints (each weighing…

A: To calculate toatl weight of chocolate mints  Total weight=Total no of chocolates…

Q: How many milliliters of a  3.2%  bleach solution must be mixed with a  20%  bleach solution to…

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Q: I have a large pot containing 6 liters of soup broth. If I divide the soup broth into 3lg liters for…

A: Solution...