What is the time taken by a planet to sweep an area of 2 million square km if the time taken by the same planet to cover an area of 1 million square km is 36 hours?
A. 18 hours
B. 36 hours
C. 72 hours
D. 144 hours
Answer:C
What is the time taken by a planet to sweep an area of 2 million square km if the time taken by the same planet to cover an area of 1 million square km is 36 hours?
A. 18 hours B. 36 hours C. 72 hours D. 144 hours