Q1. A boat goes downstream at 29 km/h and upstream at 17 km/h. What is the speed of the stream?
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Answer: D. 6 km/h
(29 − 17)/2 = 6 km/h.
Boats and Streams Questions for SSC CGL (with Answers)
16 Boats and Streams MCQs from the Quantitative Aptitude section, with answers and short explanations.
Score: 0 / 0
Q2. A boat goes downstream at 30 km/h and upstream at 20 km/h. What is the speed of the stream?
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Answer: B. 5 km/h
(30 − 20)/2 = 5 km/h.
Q3. A boat goes downstream at 19 km/h and upstream at 15 km/h. What is the speed of the stream?
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Answer: D. 2 km/h
(19 − 15)/2 = 2 km/h.
Q4. A boat goes downstream at 28 km/h and upstream at 22 km/h. What is the speed of the stream?
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Answer: A. 3 km/h
(28 − 22)/2 = 3 km/h.
Q5. A boat goes downstream at 16 km/h and upstream at 14 km/h. What is the speed of the stream?
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Answer: B. 1 km/h
(16 − 14)/2 = 1 km/h.
Q6. A boat goes downstream at 12 km/h and upstream at 8 km/h. What is the speed of the stream?
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Answer: D. 2 km/h
(12 − 8)/2 = 2 km/h.
Q7. A boat goes downstream at 27 km/h and upstream at 15 km/h. What is the speed of the stream?
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Answer: A. 6 km/h
(27 − 15)/2 = 6 km/h.
Q8. A boat goes downstream at 14 km/h and upstream at 12 km/h. What is the speed of the stream?
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Answer: C. 1 km/h
(14 − 12)/2 = 1 km/h.
Q9. A boat goes downstream at 21 km/h and upstream at 19 km/h. What is the speed of the stream?
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Answer: B. 1 km/h
(21 − 19)/2 = 1 km/h.
Q10. A boat goes downstream at 16 km/h and upstream at 8 km/h. What is the speed of the stream?
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Answer: A. 4 km/h
(16 − 8)/2 = 4 km/h.
Q11. A boat goes downstream at 25 km/h and upstream at 21 km/h. What is the speed of the stream?
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Answer: B. 2 km/h
(25 − 21)/2 = 2 km/h.
Q12. A boat goes downstream at 10 km/h and upstream at 4 km/h. What is the speed of the stream?
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Answer: C. 3 km/h
(10 − 4)/2 = 3 km/h.
Q13. A boat goes downstream at 10 km/h and upstream at 8 km/h. What is the speed of the stream?
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Answer: C. 1 km/h
(10 − 8)/2 = 1 km/h.
Q14. A boat goes downstream at 27 km/h and upstream at 23 km/h. What is the speed of the stream?
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Answer: A. 2 km/h
(27 − 23)/2 = 2 km/h.
Q15. A boat goes downstream at 11 km/h and upstream at 1 km/h. What is the speed of the stream?
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Answer: D. 5 km/h
(11 − 1)/2 = 5 km/h.
Q16. The speed of a boat in still water is 10 km/h and the speed of the stream is 2 km/h. How long will the boat take to go 32 km upstream?
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Answer: A. 4 hours
Upstream speed = 10 − 2 = 8 km/h. Time = 32/8 = 4 hours.
More Quantitative Aptitude topics
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- Profit and Loss 49
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- Simple Interest 43
- Time and Work 41
- LCM and HCF 39
- Ratio and Proportion 38
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- Compound Interest 36
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- Geometry 29
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- Partnership 17
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- Indices and Surds 10
- Trigonometry 10
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