Question
Pranab is thrice as efficient as Ghulam, and Ghulam is twice as efficient as Krishna. If the trio work together, how long will they take to complete a job which Ghulam completes in 25 days.
Answer: Option A
:
A
Let total work be 100 units.
Ghulam’s one day work = 10025= 4 units.
Pranab’s one day work = 12 units.
Krishna’s one day work = 2 units.
Combined work of the trio = 4 + 12 + 2 = 18 units.
Hence, They will take 10018=509days. Option(a).
2nd method:-In place of unit, we can take in percentage form also.In one day, G=4%,P=12%,K=2%
Total in one day= 18% , Then 100% in 1008 days i.e 509days. Option(a).
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:
A
Let total work be 100 units.
Ghulam’s one day work = 10025= 4 units.
Pranab’s one day work = 12 units.
Krishna’s one day work = 2 units.
Combined work of the trio = 4 + 12 + 2 = 18 units.
Hence, They will take 10018=509days. Option(a).
2nd method:-In place of unit, we can take in percentage form also.In one day, G=4%,P=12%,K=2%
Total in one day= 18% , Then 100% in 1008 days i.e 509days. Option(a).
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