Q32
If 10 persons can do a job in 20 days, then 20 person with twice the efficiency can do the same job in:
A.
5 days
AnswerB.
40 days
C.
10 days
D.
20 days
Answer: Option A
Solution
Answer: Option A
Solution:
By work equivalence method,man × days × work = MAN × DAYS × WORK
10 × 20 × 1 = 20 × 2 × x
→ x = 5 days