Question
A boat takes 270 minutes to travel 90 km in upstream.
The same boat in the same stream takes 120 minutes to travel 50 km in downstream. Find the distance travelled by the boat while travelling in still water for 360 minutes.Solution
Distance travelled by the boat while travelling in upstream for 1 hour = 90 × (60/270) = 20 km Distance travelled by the boat while travelling in downstream for 1 hour = 50 × (60/120) = 25 km So, upstream and downstream speed of the boat are 20 km/h and 25 km/h, respectively So, speed of the boat in still water = (20 + 25) ÷ 2 = 22.5 km/h So, distance travelled by the boat travelling in still water for 360 minutes = 22.5 × (360/60) = 135 km
With the aim to teach how many sentences in 22 scheduled vernacular languages in Devanagari script with translation in English has Bhasha Sangam been la...
Which sport is associated with Divyakriti Singh, India's first woman to win the Arjuna Award?
Consider the following statements:
I. Recently Minister of Finance and Corporate Affairs Nirmala Sitharaman announced the assessment of States/UT...
Who among the following is nominated as UNHCR Goodwill Ambassador for Pakistan?
What is the dimension of the kabaddi play field for men?
Which of the following won the 'NATIONAL TECHNOLOGY AWARDTRANSLATIONAL RESEARCH' in National Technology Week 2023?
The Reserve Bank of India was established in:
In November 2023, Union health ministry has decided that Ayushman Bharat Health and Wellness Centres to be renamed as _______.
From which Constitution, the ideals of freedom, equality and brotherhood given in the preamble of our Constitution have been taken?
In India, which of the following statements is true about the National Investment Fund?
Statements:
I. It was created in 2005.
...
Relevant for Exams:
