Raine's answer to Alicia's Primary 6 Maths Measurement Singapore question.
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Part (b) answer^^
Since the difference between the large and small bottle is 1.5 litres, as found in part (a),
Volume of a large bottle can be written as:
vol. of large bottle = vol. of small bottle + 1.5
I used 'y' to represent the vol. of a small bottle. Given that 7.5 litres was used to fill up 2 large bottles and 3 small bottles completely, the total volume of the 3 small bottles and 2 large bottles is 7.5 litres. Hence, 3y + 2y + 2(1.5) = 7.5. Proceed to find the volume of one small bottle, y. Thn, find the volume of lemonade remaining by subtracting 0.3 from the volume of a small bottle. Add 7.5 to that value to find the volume of lemonade made initially.
Since the difference between the large and small bottle is 1.5 litres, as found in part (a),
Volume of a large bottle can be written as:
vol. of large bottle = vol. of small bottle + 1.5
I used 'y' to represent the vol. of a small bottle. Given that 7.5 litres was used to fill up 2 large bottles and 3 small bottles completely, the total volume of the 3 small bottles and 2 large bottles is 7.5 litres. Hence, 3y + 2y + 2(1.5) = 7.5. Proceed to find the volume of one small bottle, y. Thn, find the volume of lemonade remaining by subtracting 0.3 from the volume of a small bottle. Add 7.5 to that value to find the volume of lemonade made initially.
Date Posted:
2 years ago
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