AlgebraMediumChairs and a table
Algebra practice question
Four chairs and a table cost $340. The table costs $40 more than two chairs. What is the cost of one chair, in dollars?
Answer: 50
Let a chair cost c; the table costs 2c + 40. Then 4c + 2c + 40 = 340 → 6c = 300 → c = 50.
Common wrong answers
- If you answered 85
- 85 is 340 ÷ 4, ignoring the table.
- If you answered 140
- 140 is the table.
- If you answered 56.67
- 56.67 comes from 6c = 340.
More Algebra questions
- Medium
A system: 2x + y = 11 and x − y = 1. What is the value of x + y? - Medium
Which of the following describes all solutions to 4x − 9 ≤ 2x + 5? - Medium
A phone's battery percentage is modeled by P = 100 − 8t, where t is the number of hours since it was unplugged… - Medium
If y = 2x − 1 and 3x + y = 14, what is the value of x? - Medium
If |2x − 3| = 7, what is the sum of all possible values of x? - Medium
Line k has equation y = (2/3)x + 1. Which equation represents a line perpendicular to line k?
Not affiliated with the College Board. SAT is a trademark of the College Board.