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Boat River - Expert Level: conceptual clarity Boat River EXPERT

This skill evaluation ⚡ worksheet focuses on Boat River - a key topic in Distance Logic. You'll solve 20 expert-level problems (Worksheet 9 of 10). The primary focus is on conceptual clarity. Master boat river ssc cgl, boat river reasoning tricks, and fast boat river solving through systematic practice.

📝 Worksheet 9 of 10 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Expert level

What you'll learn in this worksheet:
Your progress through Boat River
Worksheet 9 of 10 (88% complete)

Question 1

A boat travels at 25 km/h in still water. The stream flows at 4 km/h. How long will it take to go 64 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 25 + 4 = 29 km/h
2. Time = Distance / Speed = 64 / 29 = 2.2 hours

Question 2

A boat travels at 21 km/h in still water. The stream flows at 7 km/h. How long will it take to go 73 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 21 + 7 = 28 km/h
2. Time = Distance / Speed = 73 / 28 = 2.6 hours

Question 3

A boat travels 55 km downstream in 1.9 hours and upstream in 4.2 hours. The stream speed is 8 km/h. Find the boat's speed in still water.
Step-by-step:
1. Let boat speed = x km/h, stream speed = 8 km/h
2. Downstream: 55/(x + 8) = 1.9
3. Upstream: 55/(x - 8) = 4.2
4. Solving gives x = 21 km/h

Question 4

A boat travels at 12 km/h in still water. The stream flows at 6 km/h. How long will it take to go 69 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 12 + 6 = 18 km/h
2. Time = Distance / Speed = 69 / 18 = 3.8 hours

Question 5

A boat travels at 16 km/h in still water. The stream flows at 6 km/h. How long will it take to go 37 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 16 + 6 = 22 km/h
2. Time = Distance / Speed = 37 / 22 = 1.7 hours

Question 6

A boat travels at 17 km/h in still water. Stream speed is 4 km/h. What is the difference between upstream and downstream time for 30 km?
Step-by-step:
1. Downstream speed = 21 km/h, Time = 1.4 hours
2. Upstream speed = 13 km/h, Time = 2.3 hours
3. Difference = 2.3 - 1.4 = 0.9 hours

Question 7

A boat travels at 12 km/h in still water. The stream flows at 5 km/h. How long will it take to go 45 km upstream?
Step-by-step:
1. Upstream speed = Boat speed - Stream speed = 12 - 5 = 7 km/h
2. Time = Distance / Speed = 45 / 7 = 6.4 hours

Question 8

A boat travels at 19 km/h in still water. The stream flows at 4 km/h. How long will it take to go 57 km upstream?
Step-by-step:
1. Upstream speed = Boat speed - Stream speed = 19 - 4 = 15 km/h
2. Time = Distance / Speed = 57 / 15 = 3.8 hours

Question 9

A boat travels 60 km downstream in 3.0 hours and upstream in 5.0 hours. The stream speed is 4 km/h. Find the boat's speed in still water.
Step-by-step:
1. Let boat speed = x km/h, stream speed = 4 km/h
2. Downstream: 60/(x + 4) = 3.0
3. Upstream: 60/(x - 4) = 5.0
4. Solving gives x = 16 km/h

Question 10

A boat travels at 17 km/h in still water. The stream flows at 3 km/h. How long will it take to go 61 km upstream?
Step-by-step:
1. Upstream speed = Boat speed - Stream speed = 17 - 3 = 14 km/h
2. Time = Distance / Speed = 61 / 14 = 4.4 hours

Question 11

A boat travels at 25 km/h in still water. Stream speed is 3 km/h. What is the difference between upstream and downstream time for 79 km?
Step-by-step:
1. Downstream speed = 28 km/h, Time = 2.8 hours
2. Upstream speed = 22 km/h, Time = 3.6 hours
3. Difference = 3.6 - 2.8 = 0.8 hours

Question 12

A boat travels at 18 km/h in still water. The stream flows at 6 km/h. How long will it take to go 31 km upstream?
Step-by-step:
1. Upstream speed = Boat speed - Stream speed = 18 - 6 = 12 km/h
2. Time = Distance / Speed = 31 / 12 = 2.6 hours

Question 13

A boat travels at 14 km/h in still water. The stream flows at 7 km/h. How long will it take to go 51 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 14 + 7 = 21 km/h
2. Time = Distance / Speed = 51 / 21 = 2.4 hours

Question 14

A boat travels at 14 km/h in still water. Stream speed is 8 km/h. What is the difference between upstream and downstream time for 55 km?
Step-by-step:
1. Downstream speed = 22 km/h, Time = 2.5 hours
2. Upstream speed = 6 km/h, Time = 9.2 hours
3. Difference = 9.2 - 2.5 = 6.7 hours

Question 15

A boat travels at 12 km/h in still water. The stream flows at 3 km/h. How long will it take to go 80 km upstream?
Step-by-step:
1. Upstream speed = Boat speed - Stream speed = 12 - 3 = 9 km/h
2. Time = Distance / Speed = 80 / 9 = 8.9 hours

Question 16

A boat travels at 24 km/h in still water. The stream flows at 3 km/h. How long will it take to go 73 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 24 + 3 = 27 km/h
2. Time = Distance / Speed = 73 / 27 = 2.7 hours

Question 17

A boat travels at 17 km/h in still water. The stream flows at 4 km/h. How long will it take to go 71 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 17 + 4 = 21 km/h
2. Time = Distance / Speed = 71 / 21 = 3.4 hours

Question 18

A boat travels 69 km downstream in 2.8 hours and upstream in 7.7 hours. The stream speed is 8 km/h. Find the boat's speed in still water.
Step-by-step:
1. Let boat speed = x km/h, stream speed = 8 km/h
2. Downstream: 69/(x + 8) = 2.8
3. Upstream: 69/(x - 8) = 7.7
4. Solving gives x = 17 km/h

Question 19

A boat travels at 20 km/h in still water. The stream flows at 4 km/h. How long will it take to go 69 km downstream?
Step-by-step:
1. Downstream speed = Boat speed + Stream speed = 20 + 4 = 24 km/h
2. Time = Distance / Speed = 69 / 24 = 2.9 hours

Question 20

A boat travels at 17 km/h in still water. Stream speed is 7 km/h. What is the difference between upstream and downstream time for 45 km?
Step-by-step:
1. Downstream speed = 24 km/h, Time = 1.9 hours
2. Upstream speed = 10 km/h, Time = 4.5 hours
3. Difference = 4.5 - 1.9 = 2.6 hours
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