Question
The downstream speed of a boat is 4 km/hr more than its
upstream speed and the ratio of the speed of the boat in still water to the speed of the stream is 11:2. Find the total time taken by boat to travel 52 km downstream and 45 km upstream?Solution
Let the speed of boat in still water be x km/hr and that of stream be y km/hr. ATQ, ⇒  (x + y) – (x – y) = 4 ⇒  y = 2 km/hr ⇒  x = 2 × 11/2 = 11 km/hr Required time = [52/(11+2)] + [45/(11−2)] = 9 hr
Match the following:
 Consider the following statements about Treaty of Conventional Armed Forces in Europe (CFE):
1. Recently Ukraine formally withdrew from this T...
Who has been appointed as the Director General of the Central Industrial Security Force as of August 2024?
On 22nd May 2023, which bank has introduced live chat over video and web as customer service channels in India?
Which specific day is designated for the celebration of National Tourism Day?
Who has been appointed as the new Chairperson of the Union Public Service Commission (UPSC) as of August 2024?
Gujarat’s iconic handicraft ‘Gharchola’ has recently received which GI tag number for the state?Â
Bijawar-Panna Plateau is a part of which of the following regions?
Which of the following is the largest gland in the human body and plays a crucial role in metabolism, detoxification, and the production of important bi...
How many low-performing districts will be targeted under the PMDDKY?
Relevant for Exams:
