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primary 6 | Maths
| Ratio
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Pls help me thank you sir/mdm
Date Posted: 6 years ago
Views: 517
Ahmad at first: 8 units
David at first : 11 units
Difference = 11 - 8 = 3 units
Ahmad after giving away : 9 units
David after giving away : 14 units
Difference = 14 - 9 = 5 units
Since they gave away equal number of toy cars, their difference before giving away and after giving away is the same. So make the number of units the same.
5 x 3 = 15
3 x 5 = 15
So the difference is actually 15 units.
So actually, Ahmad at first
= 8 x 5 = 40 units
Ahmad after giving away
= 9 x 3 = 27 units
40 - 27 = 13
He gave away 13 units.
Percentage Ahmad gave away
= 13/40 x 100%
= 32.5%
David at first : 11 units
Difference = 11 - 8 = 3 units
Ahmad after giving away : 9 units
David after giving away : 14 units
Difference = 14 - 9 = 5 units
Since they gave away equal number of toy cars, their difference before giving away and after giving away is the same. So make the number of units the same.
5 x 3 = 15
3 x 5 = 15
So the difference is actually 15 units.
So actually, Ahmad at first
= 8 x 5 = 40 units
Ahmad after giving away
= 9 x 3 = 27 units
40 - 27 = 13
He gave away 13 units.
Percentage Ahmad gave away
= 13/40 x 100%
= 32.5%
Extremely clear and easy to understand sir. Thank you so much for your detail explanation
You are welcome!
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This is a constant difference question as they said that both gave away the same amount of toy cars
Date Posted:
6 years ago
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