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Only two persons sit to the left of Riya. One person sits between Riya and Purvi. Purvi sits fifth to the left of Neena. There will be two cases: Purvi will sit either second to the right or left of Riya. _____ _____ Riya _____ Purvi _____ _____ _____ _____ Neena Case 1. Purvi _____ Riya _____ _____ Neena Case 2. As many persons sit to the left of Neena as to the right of Divya. Meghna sits third to the left of Divya. Two persons sit between Meghna and Jaya. Pooja sits exactly between Neena and Jaya, who sits to the right of Neena. More than seven persons sit between Neena and Jaya. If nine person will sit between Neena and Jaya, then Pooja will sit exactly between Neena and Jaya. Meghna will sit third to the right of Jaya. As nine person sit to the left of Neena, so same number of person will sit to the left right of Divya. This case will get discarded as at most 28 persons sit in a linear row. _____ _____ Riya _____ Purvi _____ _____ _____ _____ Neena ___ ____ ____ ____ Pooja ____ ____ ____ _____ Jaya ____ _____ Meghna ____ _____ Divya ____ _____ ____ _____ ____ _____ ____ _____ ____ Case 1. If nine person will sit between Neena and Jaya, then Pooja will sit exactly between Neena and Jaya. Meghna will sit third to the right of Jaya. As five person sit to the left of Neena, so same number of person will sit to the left right of Divya. Purvi _____ Riya _____ _____ Neena___ ____ ____ ____ Pooja ____ ____ ____ _____ Jaya ____ _____ Meghna ____ _____ Divya ___ ____ ____ ____ ____ Case 2. Final arrangement as shown below: Purvi _____ Riya _____ _____ Neena___ ____ ____ ____ Pooja ____ ____ ____ _____ Jaya ____ _____ Meghna ____ _____ Divya ___ ____ ____ ____ ____
A boat travels 48 km downstream in 4 hours and 24 km upstream in 6 hours. What is the speed of the boat in still water?
A man can row 25/2 km an hour in still water and he finds that it takes him thrice as long to row up as to row down the river. The rate of stream is: