AlgebraEasy–MediumLarger of two related numbers
Algebra practice question
One number is 4 more than a second number, and three times the second number is 2 less than twice the first. What is the larger number?
Answer: 10
x = y + 4 and 3y = 2x − 2 give 3y = 2y + 8 − 2, so y = 6 and x = 10.
Common wrong answers
- If you answered 4
- 4 is the difference between them.
- If you answered 6
- 6 is the smaller number.
- If you answered 14
- 14 adds 4 to 10 again.
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