Question
Quantitative Ability and Data Interpretation Question on Time and Work
X, Y, and Z are three software experts, who work on upgrading the software in a number of identical systems. X takes a day off after every 3 days of work, Y takes a day off after every 4 days of work and Z takes a day off after every 5 days of work.
Starting afresh after a common day off,
i) X and Y working together can complete one new upgrade job in 6 days
ii) Z and X working together can complete two new upgrade jobs in 8 days
iii) Y and Z working together can complete three new upgrade jobs in 12 days If X, Y and Z together start afresh on a new upgrade job (after a common day off), exactly how many days will be required to complete this job?
A
3 days
B
4 days
C
2 days
D
3.5 days
E
2.5 days
Answer
2.5 days
Explanation
Solution
The correct option is (E): 2.5 days.