alleryStart learning →A car travels 240 km in 3 hours. What is its average speed in km/h?
- 60
- 70
- 75
- 80
Show answer and solution
Correct answer: D. 80
1. Speed = Distance / Time.
2. = 240 / 3.
3. = 80 km/h.
_Source: jkchrome TSD QB, p.1 — basic speed_
NIACL Administrative Officer Boats and Streams — practice questions
Explore 29 free Boats and Streams questions in NIACL Administrative Officer Quantitative Aptitude. Open each question or exercise to read its content, reference answers and available explanation.
Practise Boats and Streams with Quill →Boats and Streams questions and exercises with answers
Showing questions 1–29 of 29.
A car travels 240 km in 3 hours. What is its average speed in km/h?Read the answer and worked solution →Convert 72 km/h to m/s.Read the answer and worked solution →A train 120 m long passes a pole in 6 seconds. What is its speed in km/h?Read the answer and worked solution →Two trains 150 m and 100 m long run on parallel tracks in opposite directions at 60 km/h and 40 km/h. Time to cross each other:Read the answer and worked solution →A man covers a distance at 5 km/h in 6 hours. At what speed must he travel to cover the same distance in 5 hours?Read the answer and worked solution →A boat goes 24 km downstream in 3 hours and 18 km upstream in 3 hours. Speed of boat in still water:Read the answer and worked solution →If A walks at 4 km/h, he reaches office 10 min late. At 5 km/h, he is 10 min early. Distance to office:Read the answer and worked solution →A train 200 m long crosses a platform 100 m long in 12 seconds. Find the train's speed in km/h.Read the answer and worked solution →A car covers half a journey at 40 km/h and the other half at 60 km/h. Average speed for the whole journey:Read the answer and worked solution →A man can row at 8 km/h in still water. Stream flows at 2 km/h. Time to row 30 km downstream:Read the answer and worked solution →Complete the idea of a percentageRead the answer and worked solution →Ratios into percentagesRead the answer and worked solution →Order the steps of the unitary methodRead the answer and worked solution →What is the percentage taken OF?Read the answer and worked solution →True or false: percentages and their baseRead the answer and worked solution →Match each comparison to its formRead the answer and worked solution →Common percentage conversionsRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every correct way to express one quarterRead the answer and worked solution →Flip and pair: fraction with percentageRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →True or false: the unitary methodRead the answer and worked solution →Ratio, fraction, or percentage?Read the answer and worked solution →Complete the comparison chainRead the answer and worked solution →Percentage of a quantityRead the answer and worked solution →Order the steps: turn a part into a percentageRead the answer and worked solution →Assertion and reason: comparisonsRead the answer and worked solution →
Worked practice questions
Convert 72 km/h to m/s.
- 15 m/s
- 20 m/s
- 25 m/s
- 30 m/s
Show answer and solution
Correct answer: B. 20 m/s
1. m/s = km/h × 5/18.
2. 72 × 5/18.
3. = 20 m/s.
_Source: jkchrome TSD QB, p.1 — unit conversion_
A train 120 m long passes a pole in 6 seconds. What is its speed in km/h?
- 60
- 72
- 80
- 90
Show answer and solution
Correct answer: B. 72
1. Speed (m/s) = 120 / 6 = 20 m/s.
2. To km/h: 20 × 18/5.
3. = 72 km/h.
_Source: jkchrome TSD QB, p.2 — train passing pole_
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