engineering recuitment NMDC Maintenance Assistant Fitter 2021 Mock Test Quantitative Aptitude Speed Time and Distance Boat and River
Mr.Aman, rowing a boat, cover a distance of 48 km in 3 hours downstream. He covers (7/16) of the downstream distance on 3 hours when rowing upstream. Calculate speed of the stream.
1
1.5 km/h
2
4.5 km/h
3
3.5 km/h
4
2.0 km/h