Question
There is road beside river. Two friends started from a
point A, moved to a school situated at another point B and then returned to A again. One of them moves on a motorcycle at a speed of 24km/hr, while the other sails on a boat at a speed of 20km/hr. If the river flows at the speed of 8km/hr, which of the two friends will return to point A first?(flow of the river is from point A to B)Solution
Clearly, the motorcyclist move both ways at a speed of 24km/hr. So, average speed of the motorcyclist = 24km/hr The boat sail or moves downstream = 20 + 8 = 28 km/hr Boat sail or moves upstream = 20 – 8 = 12 km/hr So, average of the boat = (2 × 28 × 12 )/(28 + 12) = 672/40 = 16.8 km/hr Since, the average speed of the motorcyclist is greater, he will return to A first.
Who has directed the film Koozhangal which won the Best Film Award in the Asian Film Competition category at the 20th Dhaka International Film Festival ...
Which of the following parameters has been increased as per the latest ASUSE report?
 Which of the following are the achievements after the budget of 2014 - 15 till now?
1. 47 . 8 crores PM Jana Dhan Accounts
2. COVI...
Where will the training of astronauts be conducted for Gaganyaan Mission?
Who among the following is the author of the book ‘Overdraft: Saving the Indian Saver’? Â
The AYUSH Ministry has launched ‘HCCR' Portal recently. With which this portal is associated?
Match List-I and List-II regarding the medal tally in National Games 2022.
List-I (Team)Â Â Â Â Â Â Â List-II (Medals)
a) Servi...
According to the National Education Policy 2020,till which grade will the teacher be able to teach lessons in mother tongue or regional languageÂ
Which of the following banks have merged with Bharat Financial Inclusion in which the shares of the latter will be transferred to the bank?
In what form did the Indian government introduce the Windfall Tax on July 1st, 2022, to address the shortage of energy products on the domestic market?
Relevant for Exams:
