Which of the following ratios is the greatest? a) \(7 : 11\) b) \(9 : 14\) c) \(11 : 18\) d) \(13 : 21\)
\(9 : 14\)
Convert each ratio to a decimal value to compare them directly.
\(\frac{7}{11} = 0.636\) and \(\frac{9}{14} = 0.643\).
\(\frac{11}{18} = 0.611\) and \(\frac{13}{21} = 0.619\).
Comparing \(0.636\), \(0.643\), \(0.611\) and \(0.619\), the largest value is \(0.643\), which is \(\frac{9}{14}\).
Hence, the greatest ratio is \(9 : 14\).
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In a mixture of 156 litres, the ratio of milk and water is 7 : 6. How much water should be added to make the ratio 14 : 13?
If the ratio of the first to second number is 3 : 4 and that of the second to the third number is 8 : 5, and sum of three numbers is 190 then the third number is:
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