alleryStart learning →Pilar bought a purse on sale for $18, which is one-half of the original price. What was the original price?
A$18
B$9
C$54
D$36
Answer & Solution
Correct answer: D. $36
1. Let p equal the original price of the purse.
2. The sentence 18 is one-half the original price translates to 18 = one-half times p.
3. Multiply both sides by 2 to solve for p, giving p equals 36.
4. Check the answer: 18 is indeed one-half of 36, so the original price was $36.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 3 "Math Models", section 3.1 Use a Problem-Solving Strategy_
Keep practising Math Models
Browse all Math Models questions for CAASPP Mathematics, or explore more Mathematics topics.
Related questions
The plural of the word vertex, used for the corners of a triangle, is what?By definition, what makes a triangle a right triangle?A triangular church window has an area of 90 square meters and a base of 15 meters. What iA triangular garden has a perimeter of 24 feet, and two of its sides measure 4 feet and 9 Two angles of a triangle measure 55 degrees and 82 degrees. What is the measure of the thiFor a triangle with base b and height h, what formula gives its area?For a triangle with side lengths a, b, and c, what formula gives its perimeter?For any triangle, what is the sum of the measures of its three interior angles?