(a^3 + b^3)/((ka)^3 + (kb)^3) with decimals

The same question, asked 7 times: 14 Sep 2025 S1*, 16 Sep 2025 S2*, 17 Sep 2025 S2*, 18 Sep 2025 S1*, 18 Sep 2025 S2*, 18 Sep 2025 S3*, 19 Sep 2025 S3. Every wording below, oldest first.

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Question 1
14 Sep 2025 S1
52 $\frac{(0.1 \times 0.1 \times 0.1 + 0.03 \times 0.03 \times 0.03)}{(0.3 \times 0.3 \times 0.3 + 0.09 \times 0.09 \times 0.09)}$
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Question 2
16 Sep 2025 S2
75 $(0.05^3 + 0.01^3) \div (0.25^3 + 0.05^3)$
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Question 3
17 Sep 2025 S2
74 $(0.02^3 + 0.004^3) \div (0.2^3 + 0.04^3)$
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Question 4
17 Sep 2025 S2
75 $(0.4 \times 0.4 \times 0.4 + 0.02 \times 0.02 \times 0.02) \div (1.2 \times 1.2 \times 1.2 + 0.06 \times 0.06 \times 0.06)$
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Question 5
18 Sep 2025 S1
74 $(0.12^3 + 0.06^3) \div (0.24^3 + 0.12^3)$
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Question 6
18 Sep 2025 S2
75 $(0.04^3 + 0.02^3) \div (0.2^3 + 0.1^3)$
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Question 7
18 Sep 2025 S3
74 $(0.25^3 + 0.05^3) \div (0.5^3 + 0.1^3)$
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Question 8
18 Sep 2025 S3
75 $(0.05^3 + 0.005^3) \div (0.25^3 + 0.025^3)$
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Question 9
19 Sep 2025 S3
75 $(0.2^3 + 0.02^3) \div (0.4^3 + 0.04^3)$
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(a^3 + b^3)/((ka)^3 + (kb)^3) with decimals

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