Question

'R' takes 20 days to complete a task, and 'A' takes 30

Q: 'R' takes 20 days to complete a task, and 'A' takes 30 days to do the same task. To finish the job i

WecansaythatLetthetotalwork60unitsLCMof2030EfficiencyofR60203unitsdayEfficiencyofA60302unitsdayTheircombinedefficiency235unitsdayTocompletetheworkin6daystherecombinedefficiencyshouldbe60610unitsdayRequiredpercentageincrease1051005100

days to do the same task. To finish the job in just 6 days, what percentage increase in their respective efficiencies is required by 'R' and 'A'?

A 75%

B 25%

C 100%

D 95%

E 55%

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'R' takes 20 days to complete a task, and 'A' takes 30

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