BUY BOOKS
Variable Vault Level 1 Medium maths puzzle involving algebra, clues, codeword and dials

Variable Vault – Level 1 – Medium

Home » Puzzles » Variable Vault » Level 1 - Medium » Variable Vault – Level 1 – Medium
Topics: algebra, clues, codeword, dials, linear equations, systems of equations

Four lettered dials (A, B, C, D) unlock a vault. Each dial must be set to the correct number based on the clues below. Solve all clues to find the code: the 4-digit number ABCD.

Crack the vault code using these clues:

– B + A = 5
C = B + 4
A + C + D = 11
B + A + D + C = 12
A + B = C + D – 2

Your Workings For Variable Vault

Enter Code:

Reveal the Answer

Reveal Answer
Additional instructions for Variable Vault (Level 1, Medium)

Variable Vault – Medium

Medium puzzles usually combine several algebra skills: expanding, rearranging, and possibly extracting a specific value (like a coefficient).

Strategy:

  • Rewrite the expression clearly after substitution.
  • Simplify completely before solving.
  • Keep track of each unlocked value in order.

Tip: if an answer looks messy, check earlier expansion steps for sign errors.

Full help: Variable Vault

Next Puzzle →
Concepts covered in this puzzle:

You must be logged in to view this answer.