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A is thrice as good a workman as B and therefore is able to finish a job in 30 days less than B. How many days will they take to finishthe job working together?
Let A take a and B take 3a days to finish the work.
As per the question,
∴ x=302=15 days
Time taken by B to complete the work is 3a
So 3×15=45 days
Therefore 1 day work of (A+B)= 115+145=3+145=445
Hence, (A+B) will finish the work in 454 or 1114days
Hence option C is correct
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