AlgebraEasy–MediumLeast number of extra items to reach a target
Algebra practice question
A gardener wants at least 200 plants for a border. She buys 14 trays that each hold 12 plants and makes up the rest with single pots. What is the least number of single pots she must buy?
Answer: 32
The trays give 14 × 12 = 168 plants. Then 168 + p ≥ 200 → p ≥ 32.
Common wrong answers
- If you answered 31
- 31 leaves her one plant short.
- If you answered 168
- 168 is the number of plants in the trays.
- If you answered 200
- 200 is the target, not the shortfall.
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