A mixture of 30 pounds of candy sells for $1.10 a pound. The mixture consists of chocolates worth $1.50 a pound and chocolates worth 90¢ a pound. How many pounds of the $1.50 chocolate were used to make the mixture?
If x represents the pounds of $1.50 chocolates used, then which of the following represents the pounds of 90¢ chocolates used?
a.x
b.30
c.30 - x

A mixture of 30 pounds of candy sells for $1.10 a pound. The mixture consists of chocolates worth $1.50 a pound and chocolates worth 90¢ a pound. How many pounds of the $1.50 chocolate were used to make the mixture?
If x represents the pounds of $1.50 chocolates used, then which of the following represents the pounds of 90¢ chocolates used?
a.x
b.30
c.30 - x

b.30

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A mixture of 30 pounds of candy sells for $1.10 a pound. The mixture consists of chocolates worth $1.50 a pound and chocolates worth 90¢ a pound. How many pounds of the $1.50 chocolate were used to make the mixture?
If x represents the pounds of $1.50 chocolates used, then which of the following represents the pounds of 90¢ chocolates used?
a.x
b.30
c.30 - x

Original conversation

User: A mixture of 30 pounds of candy sells for $1.10 a pound. The mixture consists of chocolates worth $1.50 a pound and chocolates worth 90¢ a pound. How many pounds of the $1.50 chocolate were used to make the mixture?
If x represents the pounds of $1.50 chocolates used, then which of the following represents the pounds of 90¢ chocolates used?
a.x
b.30
c.30 - x

User: Brine is a solution of salt and water. If a tub contains 50 gallons of a 5% solution of brine, how much water must evaporate to change it to an 8% solution?
a.81.25 gallons
b.62.50 gallons
c.18.75 gallons

Weegy: The answer is 18.75 gallons. 50 lbs of 5% brine sol?
5/100 x 50 = 250/100 = 2.5 lbs brine
rest will be water i.e. [ 95% water = 50 - 2.5 = 47.5 lbs
evaporation will reduce water not brine.
8% of 'a' = 2.5
a = 2.5 x 100/8 = 31.35 lbs
the solution reduced from 50 to 31.35
50 - 31.35 = 18.75 lbs of water was evaporated. ] missgeeklover|Points 60|

User: How much of an alloy with 30% copper must be added to 25 pounds of a second alloy which is 20% copper to create a 27% alloy?
a.33.85 lb
b.58.33 lb
c.391.67 lb

User: An alloy of tin is 15% tin and weighs 20 pounds. A second alloy is 10% tin. How many pounds of the second alloy must be added to the first to get a 12% mixture?
a.30 lb
b.40 lb
c.60 lb

Weegy: The answer would be 30 lbs. 15*20+10*x=12(20+x) 300+10x=240+12x 10x-12x=240-300 -2x=-60 /-2 x= 30 pounds 10 % Alloy II shifa saleheen|Points 9557|

User: To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add?
a.12 oz
b.24 oz
c.36 oz

Weegy: Let x represent the amount of distilled water in ounces
(Distilled water is a 0% solution of antiseptic)
.25(16) + 0x = .1(16 + x)....
4 + 0 = 1.6 + .1x....
4 - 1.6 = .1x....
2.4 = .1x....
2.4/.1 = x....
24 = x....
The nurse should add 24 oz of [ distilled water
] shifa saleheen|Points 9557|

User: An alloy of tin is 15% tin and weighs 20 pounds. How many pounds of tin are in the alloy?
a.3 lb
b.15 lb
c.20 lb

User: A man invests a certain amount of money at 2% interest and $800 more than that amount in another account at 4% interest. At the end of one year he earned $112 in interest. How much money was invested in each account?
Which of the following equations could be used to solve the problem?
a.0.02x + 0.04(800) = 112
b.0.02x + 0.04(x + 800) = 112
c.0.04x + 0.02(x + 800) = 112

Weegy: 105% User: convert 0.0075 to a percent User: What is the total cost of a pair of jeans that are priced $50.00 if there is 7% sales tax? Weegy: The total price would be $53.50 (More)