Home › CAT › quantitativeaptitude › Time and Work › A finishes a job in 6 days, B in 4 days. Using t…
A finishes a job in 6 days, B in 4 days. Using the LCM trick (work = 12 units), what is B's daily rate?
A$2$ units per day
B$3$ units per day
C$4$ units per day
D$6$ units per day
Answer & Solution
Correct answer: B. $3$ units per day
Work = LCM(6,4) = 12. B's rate = 12/4 = 3 units/day. A's rate = 12/6 = 2 units/day. Together 5 units/day. Time together = 12/5 = 2.4 days.
Related questions
A and B together complete a work in 12 days. A alone in 18 days. How long does B alone takRohan and Rohit together can finish a job in 10 days, while Rohan alone can do it in 15 daA and B together finish a task in 1.5 days, but A left early and the task took 2 days in aTrij can paint a wall alone in 7.2 days while Madhu takes 10.8 days for the same work. WorIf 200 men can construct a building in 1024 days, how many men are needed to construct theTwo persons Kuldeep and Agarkar can reap a field in 8 and 12 hours respectively. They workA pipe can fill a tank in 15 hours. Due to a leak at the bottom, it takes 20 hours to fill10 men can finish painting a wall in 8 days. How many more men are needed to finish the sa