Measurement, NAPX-F4-NC14

Question

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Worked Solution

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Variant 0

DifficultyLevel

607

Question

Dawn takes 4 minutes 15 seconds to swim 200 metres in the pool.

Murray swims the same distance in 2 minutes 25 seconds.

If they start at the same time, how long after Murray finishes will Dawn finish?

Worked Solution

One strategy:
Extra time = 4 min 15 sec −- 2 min 25 sec
= 2 min 15 sec −- 25 sec
= 1 minute 50 seconds

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Dawn takes 4 minutes 15 seconds to swim 200 metres in the pool. Murray swims the same distance in 2 minutes 25 seconds. If they start at the same time, how long after Murray finishes will Dawn finish?
workedSolution
One strategy:
||| |-|-| |Extra time|= 4 min 15 sec $-$ 2 min 25 sec| ||= 2 min 15 sec $-$ 25 sec| ||= {{{correctAnswer}}}|
correctAnswer
1 minute 50 seconds

Answers

Is Correct?Answer
✓

1 minute 50 seconds

x

2 minutes 10 seconds

x

2 minutes 50 seconds

x

6 minutes 40 seconds

Variant 1

DifficultyLevel

596

Question

Jerry takes 10 minutes and 35 seconds to walk to the supermarket via the park.

Annette takes a different route and arrives in 7 minutes and 15 seconds.

If they start at the same time, how long after Annette arrives will Jerry arrive at the supermarket?

Worked Solution
Extra time = 10 min 35 sec −- 7 min 15 sec
= 3 min 35 sec −- 15 sec
= 3 minutes 20 seconds

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Jerry takes 10 minutes and 35 seconds to walk to the supermarket via the park. Annette takes a different route and arrives in 7 minutes and 15 seconds. If they start at the same time, how long after Annette arrives will Jerry arrive at the supermarket?
workedSolution
||| |-|-| |Extra time|= 10 min 35 sec $-$ 7 min 15 sec| ||= 3 min 35 sec $-$ 15 sec| ||= {{{correctAnswer}}}|
correctAnswer
3 minutes 20 seconds

Answers

Is Correct?Answer
x

2 minutes 20 seconds

x

3 minutes 10 seconds

✓

3 minutes 20 seconds

x

3 minutes 50 seconds

Variant 2

DifficultyLevel

605

Question

Geoffrey ran the 1500 metre race at the school carnival in 7 minutes and 25 seconds.

He hopes to run the same distance in 6 minutes and 40 seconds at the zone carnival next month.

By how much must he improve his time to achieve this goal?

Worked Solution

One strategy:
Time difference = 7 min 25 sec −- 6 min 40 sec
= 1 min 25 sec −- 40 sec
= 45 seconds

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Geoffrey ran the 1500 metre race at the school carnival in 7 minutes and 25 seconds. He hopes to run the same distance in 6 minutes and 40 seconds at the zone carnival next month. By how much must he improve his time to achieve this goal?
workedSolution
One strategy:
||| |-|-| |Time difference|= 7 min 25 sec $-$ 6 min 40 sec| ||= 1 min 25 sec $-$ 40 sec| ||= {{{correctAnswer}}}|
correctAnswer
45 seconds

Answers

Is Correct?Answer
✓

45 seconds

x

1 minute 5 seconds

x

1 minute 15 seconds

x

1 minute 45 seconds

Variant 3

DifficultyLevel

603

Question

Georgia caught the "all stops" train from Sydney to Newcastle. The trip took 3 hours and 4 minutes.

Julia chose to drive and the trip took 2 hours and 17 minutes.

If they start at the same time, how long after Julia arrives will Georgia arrive?

Worked Solution

One strategy:
Extra time = 3 hours 4 min −- 2 hours 17 min
= 1 hour 4 min −- 17 min
= 64 min −- 17 min
= 47 minutes

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Georgia caught the "all stops" train from Sydney to Newcastle. The trip took 3 hours and 4 minutes. Julia chose to drive and the trip took 2 hours and 17 minutes. If they start at the same time, how long after Julia arrives will Georgia arrive?
workedSolution
One strategy:
||| |-|-| |Extra time|= 3 hours 4 min $-$ 2 hours 17 min| ||= 1 hour 4 min $-$ 17 min| ||= 64 min $-$ 17 min| ||= {{{correctAnswer}}}|
correctAnswer
47 minutes

Answers

Is Correct?Answer
x

39 minutes

✓

47 minutes

x

1 hour 13 minutes

x

1 hour 21 minutes

Variant 4

DifficultyLevel

601

Question

Billy takes 13 minutes 5 seconds to ride his bike to soccer training.

His brother James catches the bus and the trip takes 5 minutes and 25 seconds.

If they leave home at the same time, how long after James arrives will Billy arrive?

Worked Solution

One strategy:
Extra time = 13 min 5 sec −- 5 min 25 sec
= 8 min 5 sec −- 25 sec
= 7 minutes and 40 seconds

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Billy takes 13 minutes 5 seconds to ride his bike to soccer training. His brother James catches the bus and the trip takes 5 minutes and 25 seconds. If they leave home at the same time, how long after James arrives will Billy arrive?
workedSolution
One strategy:
||| |-|-| |Extra time|= 13 min 5 sec $-$ 5 min 25 sec| ||= 8 min 5 sec $-$ 25 sec| ||= {{{correctAnswer}}}|
correctAnswer
7 minutes and 40 seconds

Answers

Is Correct?Answer
x

7 minutes and 20 seconds

x

7 minutes and 30 seconds

✓

7 minutes and 40 seconds

x

8 minutes and 20 seconds

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