In a river, the ratio of the speed of stream and speed of a boat in still water is 2 : 5 Again, ratio of the speed of stream and speed of an another boat in still water is 3 : 4. What is the ratio of the speeds of the first boat to the second boat in still water ?

In a river, the ratio of the speed of stream and speed of a boat in st

1.	In a river, the ratio of the speed of stream and speed of a boat in still water is 2 : 5 Again, ratio of the speed of stream and speed of an another boat in still water is 3 : 4. What is the ratio of the speeds of the first boat to the second boat in still water ?
A.	10 : 7
B.	15 : 8
C.	4 : 3
D.	5 : 4
Answer» C. 4 : 3

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