Late at one speed, early at another: solve for distance

CAT has tested this idea 3 times across 3 papers, from 2017 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 2017 Slot 1 · QA Q4	10 min late at 12 km/h, 10 min early at 15 km/h	20
CAT 2020 Slot 1 · QA Q19	arrival times at 8 and 15 km/h; speed for given arrival	A
CAT 2024 Slot 3 · QA Q15	speed ±6 changes time by −4 h and +6 h	B

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