Set up all possible proportions from the numbers 8, 12, 20, 30. ??
Answers
Answer:
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Step-by-step explanation:
We note that 8 × 30 = 240 and 12 × 20 = 240
Thus, 8 × 30 = 12 × 20 ………..(I)
Hence, 8 : 12 = 20 : 30 ……….. (i)
We also note that, 8 × 30 = 20 × 12
Hence, 8 : 20 = 12 : 30 ……….. (ii)
(I) can also be written as 12 × 20 = 8 × 30
Hence, 12 : 8 = 30 : 20 ……….. (iii)
Last (I) can also be written as
12 : 30 = 8 : 20 ……….. (iv)
Thus, the required proportions are 8 : 12 = 20 : 30
8 : 20 = 12 : 30 12 : 8 = 30 : 20 12 : 30 = 8 : 20
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Answer:
Step-by-step explanation:
Set up all possible proportions from the numbers 8, 12, 20, 30. ??
8 × 30 = 240 and 12 × 20 = 240
8 × 30 = 12 × 20 ……….. equation (I)
8 : 12 = 20 : 30 ……….. equation (i)
8 × 30 = 20 × 12
8 : 20 = 12 : 30 ……….. equation (ii)
equation (I) is also written like this 12 × 20 = 8 × 30
12 : 8 = 30 : 20 ……….. equation (iii)
(I) can also be written as
12 : 30 = 8 : 20 ……….. equation (iv)
the required proportions are 8 : 12 = 20 : 30
8 : 20 = 12 : 30 12 : 8 = 30 : 20 12 : 30 = 8 : 20