Quantitative Aptitude Ques 1615
Question: M and N can do a work in 10 days and 15days respectively. If M starts on the work and bot work alternately day after day, in how many days will the work be completed?
Options:
A) 10
B) 12
C) 8
D) 9
E) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
- [b] Work done in 1st two days $ =\frac{1}{10}+\frac{1}{15}=\frac{3+2}{30}=\frac{1}{6} $
$ \therefore $ Number of days $ =2\times 6=12 $