AlgebraMediumBoxes from a delivery with a shortfall
Algebra practice question
A supplier promised 6 boxes of apples per shop to some shops, but 4 boxes were damaged and thrown away, leaving 50 boxes delivered in total. How many shops were supplied?
Answer: 9
6s − 4 = 50 gives 6s = 54, so s = 9.
Common wrong answers
- If you answered 54
- 54 is the number of boxes before damage.
- If you answered 7.67
- 7.67 adds 4 instead of subtracting.
- If you answered 8.33
- 8.33 divides 50 by 6, ignoring the damaged boxes.
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