Let the speed of boat in still water =B Let the speed of stream in still water =S Speed of boat in downstream =B+S Speed of boat in upstream =B-S B+S=21/2=10.5km/h B-S=15/2=7.5km/h Solving after – B=9km/h and S=1.5km/h ATQ- S =1.5 =6km/h B=9=36km/h Now total taken time = (21/B-S) +(15/B+S) = (21/30) +(15/42) =148/40=37/10 =3(7/10) hours
How many fundamental rights were there at the time of adoption of the Indian Constitution?
In 2020, there are 5 cyclones formed in the north Indian ocean. Which of the following severe cyclonic storms formed over Arabian seas and headed towar...
NABARD has launched an agroecology-based programme named ‘JIVA programme’. The objective of the programme is to promote ______________.
Which of the following is the highest lending arm of the World Bank?
Which unsaturated aliphatic hydrocarbon composed of 20 carbon atoms is used to make candles and paraffin wax with solar energy storage capacity?
The final of the French Open (Roland Garros) Tennis 2021 for men took place on which day?
The GCC is an alliance of states that currently consists of how many countries in Western Asia?
Carnatic music is the Indian classical music mainly associated with ________ India.
The National Multidimensional Poverty Index is released by the _________.
