A boat can travel at 12 km/h in still water. If it is moving downstream in a river flowing at 4 km/h, what is the speed of the boat relative to the riverbank?
Practice Questions
1 question
Q1
A boat can travel at 12 km/h in still water. If it is moving downstream in a river flowing at 4 km/h, what is the speed of the boat relative to the riverbank?
8 km/h
12 km/h
16 km/h
4 km/h
Speed of boat relative to riverbank = Speed of boat + Speed of river = 12 km/h + 4 km/h = 16 km/h.
Questions & Step-by-step Solutions
1 item
Q
Q: A boat can travel at 12 km/h in still water. If it is moving downstream in a river flowing at 4 km/h, what is the speed of the boat relative to the riverbank?
Solution: Speed of boat relative to riverbank = Speed of boat + Speed of river = 12 km/h + 4 km/h = 16 km/h.
Steps: 5
Step 1: Identify the speed of the boat in still water, which is 12 km/h.
Step 2: Identify the speed of the river current, which is 4 km/h.
Step 3: Understand that when the boat is moving downstream, its speed adds to the speed of the river.
Step 4: Calculate the total speed of the boat relative to the riverbank by adding the speed of the boat and the speed of the river: 12 km/h + 4 km/h.
Step 5: The result of the addition is 16 km/h, which is the speed of the boat relative to the riverbank.
