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X10 · Optional projects jobYear 4 Maths · T2 W13–14 · Projects / X10
Need exactly 36 labels. A packs six for $12; B packs nine for $18. One $7 fee for either; budget $80. What can the maths decide, and what remains a preference?
Use scrap paper or a private explanation. No purchase, household information or public performance.
Adult teaching after an own try
Answer
Both supply36 and cost$79,leaving$1. A uses6packs;Buses4. Cost alone cannot pick one; choose a supplied purpose or say more information is needed.
Why
Do not invent a unique decision where two options meet the brief.
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