If a boat goes 30 km downstream in 2 hours, what is the speed of the boat in sti

₹0.0

Question: If a boat goes 30 km downstream in 2 hours, what is the speed of the boat in still water if the speed of the current is 5 km/h?

Options:

Correct Answer: 15 km/h

Solution:

Speed downstream = Distance / Time = 30 / 2 = 15 km/h. Speed in still water = Speed downstream - Speed of current = 15 - 5 = 10 km/h.

If a boat goes 30 km downstream in 2 hours, what is the speed of the boat in still water if the speed of the current is 5 km/h?

If a boat goes 30 km downstream in 2 hours, what is the speed of the boat in still water if the speed of the current is 5 km/h?

Step 1: Identify the distance the boat travels downstream, which is 30 km.
Step 2: Identify the time it takes to travel that distance, which is 2 hours.
Step 3: Calculate the speed downstream using the formula: Speed = Distance / Time. So, Speed downstream = 30 km / 2 hours = 15 km/h.
Step 4: Identify the speed of the current, which is 5 km/h.
Step 5: Calculate the speed of the boat in still water using the formula: Speed in still water = Speed downstream - Speed of current. So, Speed in still water = 15 km/h - 5 km/h = 10 km/h.

Relative Speed – Understanding how the speed of a boat is affected by the current when moving downstream and upstream.
Speed Calculation – Calculating speed using the formula: Speed = Distance / Time.
Subtraction of Speeds – Determining the speed of the boat in still water by subtracting the speed of the current from the downstream speed.