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primary 5 | Maths
| Whole Numbers
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Am I right? If no what’s the answer with working? Thank u
Date Posted: 5 years ago
Views: 334
It is $110 part thereof means before 30min after 30min is another $10
You're missing a + $10 for your first step.
1st hour : $20
2nd hour is made of two ½ hours
$10 + $10
The last 45 min can be divided into one ½ hour period and one ¼ hour period (15 min)
+ $10 + $10(because the 15 min is part thereof so the full $10 is still charged for it)
Total = $20 + $10 + $10 + $10 + $10
= $60
2 persons, so $60 x 2 = $120
1st hour : $20
2nd hour is made of two ½ hours
$10 + $10
The last 45 min can be divided into one ½ hour period and one ¼ hour period (15 min)
+ $10 + $10(because the 15 min is part thereof so the full $10 is still charged for it)
Total = $20 + $10 + $10 + $10 + $10
= $60
2 persons, so $60 x 2 = $120
Jia Tao, you'll have to count for both perons so it's another $20, not $10
I didn’t see the word “each” the first time. I assumed the canoe was shared between the two people.
One more thing to take note :
Do not combine the durations and count the cost from there.
2h 45 min + 2h 45 min
= 4h 90 min
= 5h 30 min
= 5½ h
= 2h + 3½h
= 2h + 7 x ½h
You will conclude incorrectly that the cost is
2 x $20 + 7 x $10
= $40 + $70
= $110
Do not combine the durations and count the cost from there.
2h 45 min + 2h 45 min
= 4h 90 min
= 5h 30 min
= 5½ h
= 2h + 3½h
= 2h + 7 x ½h
You will conclude incorrectly that the cost is
2 x $20 + 7 x $10
= $40 + $70
= $110
See 1 Answer
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Hope this helps! Calculate each person’s charge and add them together.
Date Posted:
5 years ago
Thank u
Thank u
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