Questions on Word Problems: Mixtures answered by real tutors!

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Question 268790: How much 3.5% milk and 1.0% milk must be mixed to produce 220 gallons of 2.0% milk?
Click here to see answer by checkley77(12844)

Question 268886: A tire dealer sells 2 tires for as much as he paid for 3 tires. He paid $240 for a dozen tires. What is the total profit on 12 tires?
Click here to see answer by stanbon(75887)

Question 268964: A pharmacist has 2 liters of a solution containing 30% alcohol. If he wants to have a solution containing 44% alcohol, how much pure alcohol must be added?
Click here to see answer by drk(1908)

Question 268938: 1.2x � (7 + x) < x
Click here to see answer by persian52(161)

Question 269044: How much salt must be added to 67 gallons of fresh water to achieve a 5% solution?
Click here to see answer by Alan3354(69443)

Question 269204: A nurse wishes to add water to 45 ounces of a 17% solution of benzalkonium chloride to dilute it to an 10% solution. How much water must she add?
Click here to see answer by scott8148(6628)

Question 269449: how many liters of water must be added to 20L of a 75% acid solution to produce a solution that is 15% acid?
Click here to see answer by drk(1908)

Question 269614: a chemist wants to make 50ml of a 16% acid solution by mixing a 13% acid solution and an 18% acid solution. how many ml of each solution should the chemist use?
i set up the equation as followed but i dont know if it is correct
.16(20)= .13x +.18x,
then i got 3.2=.05x
then i divided and got 64 ml
x=64ml
mvprincess_87@yahoo.com
Click here to see answer by Alan3354(69443)

Question 269702: The time it takes to do homework includes a fixed amount of time to prepare plus a constant amount of time per problem. If a student can do 5 homework problems in 40 minutes, and 10 problems in 70 minutes, how many minutes will 25 problems take?
Click here to see answer by mananth(16946)

Question 269670: a nut store normally sells cashews at $4 per pound and peanuts for $1.50 per pound. at the end of the month the peanuts had not sold well, so in order to sell 60 pounds of the peanuts, the manager decided to mix the 60 pounds of peanuts with some cashews and sell the mixture for 2.50 per pound. how many pounds of cashews should be mixed with the peanuts to ensure no changes in the profit?
Click here to see answer by mananth(16946)

Question 269773: JACKIE WANTS TO MAKE A MIXTURE OF NUTS TO SELL IN HER STORE CONSISTING OF HAZELNUTS AND CASHEWS.HAZELNUTS COST $6.50 PER POUND AND CASHEWS COST $4.50 PER POUND. IF JACKIE WANTS 60 POUNDS TOTAL OF MIXTURE AND THE COST TO BE $5.10 PER POUND, HOW MANY POUND OF EACH WILL SHE NEED?
Click here to see answer by Earlsdon(6294)

Question 269840: identify an integer that is not a whole number.explain why the integer is not a whole number.
Click here to see answer by drk(1908)

Question 269838: write an example of real number that is also an irrational number. explain how you know that the number is irrational.
Click here to see answer by drk(1908)

Question 269837: linda's cell phone bill is bill is $30 per month plus 5 cents for every minute over 300 minutes. last month she paid $31 for her cell phone usage. how many minutes did she use?
Click here to see answer by drk(1908)

Question 269893: Here is the problem: A 70% acid solution is to be mixed with a 40% solution to get 90 gallons of a 50% solution. How many galens of each solution are needed?
I'm not sure how to do this problem. I don't know how to get the two equations (because I think that's what needs to be done).
Thanks!
Click here to see answer by drk(1908)

Question 269836: Peanuts worth $2.50 a pound were mixed with cashews worth $3.25 a pound. How many pounds of each were used if there were ten more pounds of peanuts that cashews and if the value of the mixture was $122.75?
Click here to see answer by checkley77(12844)

Question 269815: Nuts to you Shoppe sells cashews for $15 per kg and pecans for $10 per kg. How many kilograms of each should be mixed in order to get 20kg of a mixture worth $12 per kg?
Click here to see answer by checkley77(12844)

Question 269791: How many grams of 60% silver should be added to 2 grams of 20% silver to produce a 35% silver alloy?

so i tried to make a table
sliver amount % total quantity
silver 1 x 60% .6x
silver 2
Click here to see answer by checkley77(12844)

Question 269787: How many gallons of a 30% salt solution must be added to 5 gallons of a 10% salt solution to yield a solution that is 17.5% salt?
Click here to see answer by checkley77(12844)

Question 270003: how much gallons is 200 pints? show your work.
Click here to see answer by Tobiasz(54)

Question 270276: A lab contains 24 ounces of iodine solution of strength 15%. How much pure iodine would you mix with it to get an iodine solution of strenth 25%?
Click here to see answer by josmiceli(19441)

Question 270358: 5 less than twice a number is 29
Click here to see answer by solver91311(24713)

Question 270302: A baby weighing 2790 grams at birth is how many pounds/ounces?
Click here to see answer by checkley77(12844)

Question 270456: I've been trying to figure out how to do this problem:
What fraction of 10% alcohol should be mixed with 70% alcohol to obtain 50% alcohol?
I've been trying to use the alligations method, but not sure if that is the way to go about it...could you clarify the equation formula for me please?

Click here to see answer by checkley77(12844)

Question 270512: The Thrust SSC is the world's fastest land vehicle. Suppose the driver of a car whose top speed is 200 miles per hour requests a race against the SSC. The car gets a head start of a half hour. If there is unlimited space to race, at what distance will the SSC pass the car? Thrust SSC top speed is 763.
I know that in a half hour the car would go 100 miles and Thrust SSC can go 381.5. I know 100 is a certain percent, but I just do not know the equations I need. Thanks for your help.
Click here to see answer by ankor@dixie-net.com(22740)

Question 270734: How many quarts of a 20% salt solution must be mixed with 15 quarts of a 35% salt solution to obtain a mixture that is 25% salt?
Click here to see answer by CharlesG2(834)

Question 270740: Decide whether the experiment is a binomial experiment. If it is not, explain why:
You spin a number wheel that has 19 numbers 950 times. The random variable represents the winning numbers on each spin of the wheel.
Click here to see answer by stanbon(75887)

Question 270715: Cati's Catering is planning an office reception. The office administrator has requested a candy mixture that is 25% chocolate. Cati has available mixtures that are either 50% chocolate or 10% chocolate. How much of each type should be mixed to get a 20-lb mixture that is 25% chocolate?
Click here to see answer by stanbon(75887)

Question 270821: how many liters of at 10% solution must be mixed with a 50% acid solution in order to obtain 30 liters of a 30% solution?
Click here to see answer by stanbon(75887)

Question 271209: how much pure acid should be mixed with 2 gallons of a 40% acid solution in order to get a 70% acid solution
Click here to see answer by Earlsdon(6294)

Question 271245: How many liters of water containing 5 grams of salt per liter must be combined with x liters of water which contains y grams [y is less than 2] of salt per liter to yield a solution with 2 grams of salt per liter.
Equation in x and y=?
Click here to see answer by CharlesG2(834)

Question 271287: How many liters of a 40% antifreeze solution must be mixed with 5 liters of a 70% antifreeze solution to make a mixture that is 60% antifreeze?
I can't figure out how to set this up.
Click here to see answer by stanbon(75887)

Question 271326: A Nurse must mix 15L of a 10% solution of a drug with some 60% solution to obtain a 20% mixture. How many liters of the 60% solution will be needed?
Click here to see answer by stanbon(75887)

Question 271339: 30 coins total. Made up by only nickels and dimes. Total is $2.10. How many dimes and nickels?
Click here to see answer by checkley77(12844)

Question 271339: 30 coins total. Made up by only nickels and dimes. Total is $2.10. How many dimes and nickels?
Click here to see answer by josmiceli(19441)

Question 271374: If 12 ounces cost 90 cents how much could you buy for $7.20
Click here to see answer by checkley77(12844)

Question 271400: If i have a formula that requires 16 oz of solution for 75 gallons of water, how much solution do i need for 3 gallons of water
Click here to see answer by checkley77(12844)

Question 271599: If you have 6 quarts of a 60% acid solution, how many quarts of water would you add to obtain a 40% acid solution?
Click here to see answer by stanbon(75887)

Question 271615: How many liters of water containing 4 grams of salt per liter must be combined with x liters of water which contains y grams [y is less than 2] of salt per liter to yield a solution with 2 grams of salt per liter.
need equation in x and y
Click here to see answer by mananth(16946)

Question 271642: How much water must be added to 150 liters of denatured alcohol 85% pure to dilute it into 75% alcohol content?
Click here to see answer by CharlesG2(834)

Question 271714: Keil is going to make 13 pounds of mixed nuts for a party.Peanuts cost 2.00 per pound and fancy nuts cost 7.50 per pound. If keil can only spend 70.00 on nuts, how many of each pounds should he buy?
Click here to see answer by ankor@dixie-net.com(22740)

Question 271864: Soybean meal is 18 percent protein, cornmeal is 9 percent protein. how many pounds of each should be mixed together in order to get 360 pound mixture that is 14 percent protein?
How many pounds of the cornmeal should be in the mixture?
How many pounds of the soybean meal should be in the mixture?

Click here to see answer by Theo(13342)

Question 271987: Market Street Sweets sells two types of Pralines:a carmel version for 1.65 per pound and a chocolate version for 1.25 per pound. A Mixture of these pralines can be sold for 1.49 per pound. How many pounds of each kind should be used to make 5 pounds of the mixed pralines?
Thank you
Click here to see answer by palanisamy(496)

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