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Question
primary 6 | Maths
| Ratio
One Answer Below
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Date Posted: 5 years ago
Views: 509
Blue : 4 units
Red : 7 units
Difference = 3 units
There are 3 more units of red than blue buttons
For the newly bought buttons,
Blue = 29
Red = 8
Difference = 21 buttons
There were 21 more blue buttons than red buttons bought.
Since the number of red and blue buttons is the same in the end, the difference must be 0.
So, the difference at first must be equal to the difference of the buttons bought.
This is to get to the same number of blue and red buttons.
21 buttons = 3 units
1 unit = 7 buttons
Number of buttons at first
= 11 units
= 11 x 7 buttons
= 77 buttons
Red : 7 units
Difference = 3 units
There are 3 more units of red than blue buttons
For the newly bought buttons,
Blue = 29
Red = 8
Difference = 21 buttons
There were 21 more blue buttons than red buttons bought.
Since the number of red and blue buttons is the same in the end, the difference must be 0.
So, the difference at first must be equal to the difference of the buttons bought.
This is to get to the same number of blue and red buttons.
21 buttons = 3 units
1 unit = 7 buttons
Number of buttons at first
= 11 units
= 11 x 7 buttons
= 77 buttons
See 1 Answer
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Hope u understand
Date Posted:
5 years ago
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