Related Questions

The following questions have three statements. Study the question and the statements and decide which of the statement(s) is/are necessary to answer the question. Find the speed of the stream. Statement I: The boat goes 360 km downstream and 420 km upstream in total 54 hours. Statement II: The boat takes 17 hours to cover a distance of 510 km downstream. Statement III: A boat goes thrice the distance downstream as it goes upstream in 1 hour.
In the following question, three statements are given. You have to find which is/are necessary and sufficient to answer the following question. Find the speed of the boat in still water. Statement I: The boat goes twice the distance downstream in the same time, as it goes upstream. Statement II: Speed of the boat in still water is three times the speed of the current. Statement III: The boat goes 840 meters in 1 hour 10 minutes downstream.