Delay or stoppage on the way: new speed needed to arrive on time

CAT has tested this idea 4 times across 4 papers, from 2020 to 2025. 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 2020 Slot 3 · QA Q22	two-thirds distance in one-third time, 8-minute stop	B
CAT 2024 Slot 2 · QA Q17	two-thirds of route in one-third time, rest at 40 km/h	C
CAT 2020 Slot 1 · QA Q4	one-third speed makes 30 min late; stop of 4 minutes	B
CAT 2025 Slot 3 · QA Q6	stops of 20 and 30 minutes need +3 and +5 km/h	D

Part of Time, Speed & Distance (48 questions since 2017).