Speed upstream = 8 - 4 = 4 km/h Time to travel 30 km upstream = 30 / 4 = 7.5 hours. Correct Option: b) 7.5 hours
Mount Kosciuszko is located in which country?
Which of the following is a part of the Eastern coast?
What geographical term describes a large sea inlet that is usually concave?
Tungabhadra and Bhima rivers are tributaries of which river?
What is the approximate altitude of the geostationary orbit from the Earth's surface?
Identify the Southernmost Point of India's Territory:
With which one of the following countries, India shares maximum length of the border?
Which of the following pairs is NOT correctly matched?
In which one of the following islands of India is an active volcano found?
The largest coral reef in the world is found off the coast of which country.
