RRB NTPC Prelims Model Paper 2 with solutions

Question : 26 of 101

Marks: +1, -0

Vijay is thrice as good worker as Ajay. If these two can finish the work in 13 days by working together, how many days are required by Ajay to finish the same work working alone?

Validate

Solution:

(1) Let Ajay takes X days to finish the work working alone.
Then,

4/x=1/ 13⇒ X = 52

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