Question
In still water, boat ‘X’ is three times as fast as boat
‘Y’. Boats ‘X’ and ‘Y’ are 240 km apart in a stream and are moving towards each other. They meet after 4 hours. What is the speed of boat ‘Y’ in still water, assuming they started at the same time?Solution
ATQ,
Let the still water speed of boat ‘Y’ = ‘y’ km/h
Then, still water speed of boat ‘X’ = 3 × y = ‘3y’ km/h
Let the speed of the stream = ‘x’ km/h
One boat is moving upstream and the other downstream,
So, effective relative speed = 3y + y = ‘4y’ km/h
Now, 4y = 240 ÷ 4 = 60
So, y = 60 ÷ 4 = 15
Speed of boat ‘Y’ in still water = 15 km/h
The request/reply protocol for exchanges on the internet network is called:
Which of the following books was written by the Roman writer Pliny the elder?
In which of the following weight categories did Sakshi Malik win an Olympic medal in the year 2016?
Which of the following is the classical dance form of the state of Assam?
________ river has the least storage capacity of usable water.
Panthi dance form is associated with_______ state of India.
Criminal Procedure Code (CrPC), it is the primary legislation regarding the procedural aspects of criminal law.When did the CrPC Act came into force ?...
What is the decimal equivalent of the hexadecimal number 5A6D?
The series of coalescing alluvial fans along a mountain front is called a:
Fish can survive inside a frozen lake because
Relevant for Exams:
