### Problem Set#### Problem 1: Concrete Mix CompositionIf you mixed 8.0 tons of sand, 12 tons of rock, and 4.0 tons of cement to make concrete, what would the percentage by weight of sand be?#### Problem 2: Mixture Cost CalculationIf you have a mixture of 10 lb. of sunflower seeds, which cost 32¢ per pound, and 16 lb. of cracked corn, which cost 18¢ per pound, how much would this mixture cost per pound?#### Problem 3: Average Weight CalculationIf 28% of the objects in a box weighed 45 gm each, and the other 72% weighed 55 gm each, what is the average weight of the objects?### Explanation of Problems**Problem 1:**In this problem, you are given the weights of three different components that make up a concrete mix. You need to calculate the percentage by weight of sand in this mix.**Problem 2:**This problem involves determining the cost per pound of a mixture of two different types of seeds, each with its own cost per pound. You need to calculate the overall cost per pound of the combined mixture.**Problem 3:**This problem asks to calculate the average weight of objects in a box, given that a certain percentage of the objects have one weight and the remaining percentage have another weight.### DiagramsThere are no diagrams or graphs associated with these problems in the provided text. The problems are purely textual and rely on algebraic calculations to solve.

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Answered: If you mixed 8.0 tons of sand, 12 tons…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 65AP

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### Problem Set

#### Problem 1: Concrete Mix Composition
If you mixed 8.0 tons of sand, 12 tons of rock, and 4.0 tons of cement to make concrete, what would the percentage by weight of sand be?

#### Problem 2: Mixture Cost Calculation
If you have a mixture of 10 lb. of sunflower seeds, which cost 32¢ per pound, and 16 lb. of cracked corn, which cost 18¢ per pound, how much would this mixture cost per pound?

#### Problem 3: Average Weight Calculation
If 28% of the objects in a box weighed 45 gm each, and the other 72% weighed 55 gm each, what is the average weight of the objects?

### Explanation of Problems

**Problem 1:**
In this problem, you are given the weights of three different components that make up a concrete mix. You need to calculate the percentage by weight of sand in this mix.

**Problem 2:**
This problem involves determining the cost per pound of a mixture of two different types of seeds, each with its own cost per pound. You need to calculate the overall cost per pound of the combined mixture.

**Problem 3:**
This problem asks to calculate the average weight of objects in a box, given that a certain percentage of the objects have one weight and the remaining percentage have another weight.

### Diagrams
There are no diagrams or graphs associated with these problems in the provided text. The problems are purely textual and rely on algebraic calculations to solve.

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If you have a mixture of 10 lb. sunflower seeds which cost 32¢ per pound and 16 lb. of cracked corn which cost 18¢ per pound, how much would this mixture cost per pound? If 28% of the objects in a box weighed 45 gm each and other 72% weighed 55 gm each, what is the average weight of the objects?

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