A reservoir's water level decreased by over the summer due to evaporation. If the water level is currently at million liters, how much water was there initially?
Table of contents
- 1. Review of Real Numbers2h 24m
- 2. Linear Equations and Inequalities3h 42m
- 3. Solving Word Problems2h 48m
- 4. Graphing4h 42m
- 5. Systems of Linear Equations2h 6m
- 6. Exponents and Polynomials3h 25m
- 7. Factoring2h 36m
- 8. Rational Expressions and Equations3h 51m
- Simplifying Rational Expressions39m
- Multiplying and Dividing Rational Expressions25m
- Adding and Subtracting Rational Expressions with Common Denominators24m
- Least Common Denominators32m
- Adding and Subtracting Rational Expressions with Different Denominators39m
- Rational Equations44m
- Direct & Inverse Variation27m
- 9. Roots and Radicals2h 46m
- 10. Quadratic Equations3h 2m
3. Solving Word Problems
Percent Problem Solving
Multiple Choice
A pair of running shoes costs . The store is offering a discount. Calculate the amount of discount and the sale price of the shoes.
A
Discount = \(25, Sale price = \)55
B
Discount = \(55; Sale price = \)25
C
Discount = \(20; Sale price = \)60
D
Discount = \(60; Sale price = \)20
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Verified step by step guidance1
Identify the original price of the shoes, which is \$80, and the discount percentage, which is 25\%.
Convert the discount percentage to a decimal by dividing by 100: 25\% = 0.25.
Calculate the amount of discount by multiplying the original price by the decimal discount: Discount = \$80 \(\times\) 0.25.
Subtract the discount amount from the original price to find the sale price: Sale price = \$80 - (Discount).
Write the final expressions for both the discount and the sale price without calculating the numerical values.
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