Question
A boat running downstream covers a distance of 45 km in
9 hrs and covering the same distance upstream in 15 hrs. What is the speed of a boat in still water?Solution
Downstream speed = 45/9 = 5 km/hr Upstream speed = 45/15 = 3 km/hr So speed of boat in still water = (5 + 3)/2 = 4 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, ____ - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN - 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
