AlgebraEasy–MediumGreatest number within a limit
Algebra practice question
A shelf can hold at most 50 kilograms. Each dictionary weighs 6 kilograms. What is the greatest number of dictionaries the shelf can hold?
Answer: 8
6n ≤ 50 gives n ≤ 8.3, so 8 dictionaries.
Common wrong answers
- If you answered 7
- 7 fits but is not the greatest.
- If you answered 9
- 9 dictionaries weigh 54 kg, over the limit.
- If you answered 8.3
- 8.3 is the exact quotient; books are whole.
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