Study the following graph carefully and answer the questions given below it. What is the respective ratio of the units of goods sold by companies P and Q together to the units of goods sold by companies R and S together?
A
15 : 17
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B
17 : 18
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C
17 : 19
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D
19 : 20
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E
None of these
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Solution
The correct option is C 17 : 19 Required ratio = (22. 5 + 20) : (25 + 22.5) = 42.5 : 47.5 = 17 : 19