← Word problemsWord Problems 057 — ZAP 2015, Exercise 4Word problemsZAP 2015MediumYour answermThe unit is already there: enter only the number.Check answerReveal solutionStuck? Show me one stepRelated exercisesSimilarZAP 2008, Exercise 8 — Two cyclists on circular track, meeting timesSpeed-distance 002 — Two trains moving toward each other