10 people can do work in 30 days In how many days can 15 people complete double the work ........

Quantitative Aptitude (RRB NTPC) Time and work

10 people can do work in 30 days. In how many days, can 15 people complete double the work?

let total work be X and number of
required days =y
m1d1/w1=m2d2/w2
=(10*30)/x=(15*y)/2x
y=40 days

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