state gov WBPSC Miscellaneous Services Mock Test 2023 Quantitative Aptitude Speed Time and Distance Average Speed
A person is to reach a destination 40 km away. If he covers the first 25 km in 4 hours then at what constant speed should he go so that the average speed for the whole journey becomes 8 km/hour?
1
12 km/hour
2
13 km/hour
3
14 km/hour
4
15 km/hour