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Riddle Solver Level 1 Hard maths puzzle involving cupcakes, discount, gift card and linear equations

Riddle Solver – Level 1 – Hard

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Topics: cupcakes, discount, gift card, linear equations, percentages, star stickers

Rosie buys a cupcake and a sticker costing £14. They get 25% off the whole purchase. Fernando buys the same cupcake at full price. Harper buys the same cupcake using a £20 gift card. Altogether, they spend £133.50. How much does the cupcake cost?

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Additional instructions for Riddle Solver (Level 1, Hard)

Riddle Solver – Hard

Hard riddles often include extra information (like a known item cost, a twist, or rounding instructions) and may require a full system of equations.

Approach:

  • Extract every relationship and write it as its own line.
  • Define variables carefully (you may need two unknowns).
  • Solve systematically (elimination or substitution) and keep your working tidy.

Check: your solution must satisfy every statement in the story, not just the first total.

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