DP CONSTABLE22 Dec 2025Shift 2Boat and Stream

A boat goes 24 km downstream in 3 hours and returns upstream in 4 hours. Find the speed of the boat in still water and the speed of the stream.

एक नाव 3 घंटे में 24 किलोमीटर धारा के अनुकूल (Downstream) जाती है और 4 घंटे में धारा के प्रतिकूल (Upstream) वापस आती है। स्थिर पानी में नाव की गति और धारा की गति ज्ञात कीजिए।

Answer और ExplanationAnswer and explanation

Answer: (A) 7 km/h, 1 km/h

D = 243 = 8 km/h, U = 244 = 6 km/h
b = 8 + 62 = 7 km/h
s = 8 − 62 = 1 km/h
✓
नाव = 7 km/h, धारा = 1 km/h।
D = 243 = 8 km/h, U = 244 = 6 km/h
b = 8 + 62 = 7 km/h
s = 8 − 62 = 1 km/h
✓
Boat = 7 km/h, stream = 1 km/h.

Source: DP CONSTABLE · 22 Dec 2025 · Shift 2। Solution: Prashant Sir, Vijayastra।Source: DP CONSTABLE · 22 Dec 2025 · Shift 2. Solution by Prashant Sir, from Vijayastra.