Question
A man rows a boat 9 kms in 2 hours downstream and
returns upstream in 6 hours. The speed of the stream (in km per hour) is:Solution
Rate downstream = 9/2 = 4.5 km/hr Rate upstream = 9/6 = 1.5 km/hr Now, speed of the stream = (rate downstream – rate upstream)/2 ⇒ (4.5 – 1.5)/2 = 1.5 km/hr
More Boats and streams Questions
- Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___ - Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____ - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN
