railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
The time taken by a boat to cover a certain distance upstream is equal to 4/7 of the time taken by it to cover three times the same distance downstream. The speed of the stream is 7.5 km/h. How many (total) hours will the boat take to go 42 km upstream and 54 km downstream?
1
4.2
2
3.5
3
4
4
3