J's answer to Ashley ong 's Primary 6 Maths Singapore question.
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See main comments for working and explanation.
The main takeaway of this question is that the 3 shaded triangles take up ¼ (or 25%) of the entire rectangle WXYZ's area.
Triangles B and C already take up 17% so the other 8% is taken by Triangle A
256cm² is 8% of WXYZ's area so find 1% first.
Then find 75% (The unshaded parts take up the other 75% of WXYZ's area
The main takeaway of this question is that the 3 shaded triangles take up ¼ (or 25%) of the entire rectangle WXYZ's area.
Triangles B and C already take up 17% so the other 8% is taken by Triangle A
256cm² is 8% of WXYZ's area so find 1% first.
Then find 75% (The unshaded parts take up the other 75% of WXYZ's area
Date Posted:
2 years ago
Thanks for the thorough explanation! Fully understand!
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I realised I made a calculation error. Please see the latest comment.
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