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Primary General Studies: Transport and Communication in Hong Kong (Paper 2 (intermediate))
Primary General Studies: Transport and Communication in Hong Kong (Paper 2 (intermediate))
Paper two mixes timetables, speed, interchanges and data usage, focusing on unit conversion and step by step working.
Direct answers List what is given and what is asked before choosing an operation, then check that the unit matches the question.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 |
| Suggested time | 20 |
| Difficulty mix | Foundation 3 · Intermediate 3 · Challenge 3 · Error redo 1 |
| Chapter | Chapter: Primary General Studies: Transport and Communication in Hong Kong |
| Level | parts of a closed circuit, conductors against insulators, series against parallel, adding up battery voltage, and electrical safety |
02 Questions (10 items)
- FoundationA bus covers 12 km in 0.5 hours. What is its average speed?
- FoundationWalking at 4 km/h, how many minutes are needed to cover 1.2 km?
- FoundationLocal postage is $2.2 per letter. What is the total for 5 letters?
- IntermediateA bus covers 6 km in 15 minutes. What is the average speed in km/h?
- IntermediateA change needs 6 minutes of walking, 22 minutes on the MTR and 8 minutes of waiting. What is the total?
- IntermediateA video call uses 6 MB per minute. How much data does a 25 minute call use?
- ChallengeAn adult pays $30.9 per trip, two trips a day for 22 days, which is $1 359.6. A monthly pass costs $600. How much is saved?
- ChallengeA 5 GB plan has 3.2 GB used. If 60 MB is used each day, taking 1 GB as 1 000 MB, how many days remain?
- ChallengeA bus trip takes 45 minutes. For 5 days a week with two trips a day, how many hours is that?
- Error redoA traffic light has a 60 second cycle with 25 seconds of green. A classmate says green is 25 per cent. What is correct?
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 24 km/h. | Speed is distance divided by time, so 12 divided by 0.5 gives 24. |
| 2 | 18 minutes. | 1.2 divided by 4 is 0.3 hours, and multiplying by 60 gives 18 minutes. |
| 3 | $11.0. | 2.2 times 5 is 11, assuming every letter carries the same postage. |
| 4 | 24 km/h. | Fifteen minutes is 0.25 hours, and 6 divided by 0.25 is 24. |
| 5 | 36 minutes. | All three parts count, and 6 plus 22 plus 8 makes 36 minutes. |
| 6 | 150 MB. | 6 times 25 is 150, and the unit is megabytes rather than gigabytes. |
| 7 | $759.6 is saved. | Subtract 600 from 1 359.6, comparing the same period of travel. |
| 8 | 30 days remain. | The 1.8 GB left is 1 800 MB, and dividing by 60 gives 30 days. |
| 9 | 7.5 hours in total. | 45 times 2 times 5 is 450 minutes, which is 7.5 hours. |
| 10 | The correct figure is 41.7 per cent. | 25 divided by 60 is 0.4167, and the classmate mistook seconds for a percentage. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Then try paper three, using voltage and current to work out power and resistance.Tutor Registration →
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