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Let the distance be x km. Time taken to go = x / 30 hours, Time taken to return = x / 20 hours. Total time taken = x / 30 + x / 20 = (2x + 3x) / 60 = 5x / 60 = x / 12 hours. Average speed = Total distance / Total time = (2x) / (x / 12) = 24 km/h.
Which of the following statement is correct?
I. Arteries are the vessels which carry blood away from the heart to various organs of the body <...
Animals from Class________are warm-blooded animals.
What is the largest artery in the human body?
Animals like annelids and arthropods, where the body can be divided into identical left and right halves in only one plane, exhibit which type of symmetry?
Which of the following substances is not digested by the human body?
What is the term for the rhythmic contraction of the muscle lining of the canal to push food along the gut?
The rhythmic contraction of the muscles lining the gut to push food along is called:
Given below are two statements :
Statement I :
Whisky, brandy and rum are produced without distillation of the fermented broth.
Sta...
Decomposition is affected by:
Which is the second-largest animal phylum?
