other govt exam NBE Junior Assistant 2024 Mock Tests Series Quantitative Aptitude Speed Time and Distance Boat and River
Speed of boat in still water and speed of stream are 12.5 km / h and 2.5 km / h respectively. The boat goes ‘X’ km downstream and comes back 20 km upstream and takes total time of 5 hours, then what is the total time taken by the boat to go ‘(X - 15)’ km downstream and come back?
1
6 hours
2
4.5 hours
3
4 hours
4
5 hours