← EquationsEquations 030 — ZAP 2015, Exercise 7EquationsZAP 2015Med-HardYour answeryearsThe unit is already there: enter only the number.Check answerReveal solutionStuck? Show me one stepRelated exercisesEasierWord Problems 006 — Splitting an inheritance by ratioEquations 026 — ZAP 2017, Exercise 3Equations 003 — Chickens and rabbits on a farmSimilarZAP 2013, Exercise 5 — Piggy banks of 5 children (B = Fr. 165.40)Word Problems 010 — Noah's age