Comprehension Passage
Directions: Answer the questions based on the information given below.
In the following question, three wrong number series I, II, and III are given.
Series (I): 7, 16, 34, 61, 142, 286
Series (II): 18, 12, 15, 25.5, 55, 138
Series (III): 18, 34, 66, 138, 278, 554
Correct terms in place of wrong term in the series (I), (II), and (III) are represented by 'G', 'H', and 'K'.
In still water, a boat can cover a distance of 'G' km in (K/20) hours. How much less time will the boat take to cover the same distance downstream if the speed of the stream is 1 km/hr?
1
300 seconds
2
450 seconds
3
480 seconds
4
600 seconds
5
900 seconds