Work done in a repeating daily roster of workers

CAT has tested this idea 4 times across 4 papers, from 2021 to 2024. Solve one, and the others are the same method with different numbers or wording, which is why repeated concepts are the most efficient thing to practise.

Question	What it asks	Answer
CAT 2024 Slot 3 · QA Q9 near-repeat	pairs rotate on a three-day cycle; fraction done by Sam	B
CAT 2022 Slot 3 · QA Q3 near-repeat	same three-day pair roster; days worked by Alex	11
CAT 2021 Slot 1 · QA Q19	one works daily, two work on alternate days	D
CAT 2024 Slot 2 · QA Q6	workers on every day, every second, every third day	139

Part of Time & Work (34 questions since 2017).