Dinesh does 80 of a work in 20 days He then calls in Gokul and theytogether finish the remaining wor...........

Quantitative Aptitude ( CCS) Time and work

Dinesh does 80% of a work in 20 days. He then calls in Gokul and theytogether finish the remaining work in 3 days. How long Gokul alone would take to do the whole work?

39 days

37 days

37 1/2 days

40 days

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Explanation:

Explanation :
Dinesh work done = 20*5/4 = 25 days
1/5 workdone by Dinesh and gokul in 3days.
Whole work done = 15 days
Dinesh 1 days work = 1/25
Dinesh and gokul’s 1 day work = 1/15
Gokul’s 1 day work = 1/15 – 1/25 = 2/75
Gokul alone in 75/2 days or 37 1/2 days.