AlgebraEasyChairs from a two-variable equation
Algebra practice question
In a café, the number of chairs c and the number of tables t satisfy c = 2t. How many chairs are there when there are 7 tables?
Answer: 14
c = 2(7) = 14.
Common wrong answers
- If you answered 7
- 7 is the number of tables.
- If you answered 9
- 9 adds 2 to 7.
- If you answered 3.5
- 3.5 divides 7 by 2.
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