AlgebraMediumGreatest number of items under a weight limit
Algebra practice question
A parcel must weigh less than 2,000 grams. The empty box weighs 350 grams, and each item placed in it weighs 120 grams. What is the greatest number of items that can be packed?
Answer: 13
350 + 120n < 2,000 → 120n < 1,650 → n < 13.75. The greatest whole number is 13.
Common wrong answers
- If you answered 14
- 14 items would weigh 2,030 grams in total, over the limit.
- If you answered 16
- 16 comes from 2,000 ÷ 120, ignoring the box.
- If you answered 19
- 19 comes from (2,000 + 350) ÷ 120.
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