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15. X number of men can finish a piece of work in 30
days. If there were 6 men more, the work could be
finished in 10 da

By Eloise

15. X number of men can finish a piece of work in 30
days. If there were 6 men more, the work could be
finished in 10 days less. What is the original number
of men?
(a) 10
(b) 11 (c) 12 (d) 15
(e) 13​​

About the author
Eloise

3. Which of the rational number is positive?
0 (a) 9/-15
o
(b) -2/3
0 (c) 3/7
(d) -4/13​

A and b do one work in 25 days and 20 days they start work together but b leave the work from 7 days before so in which days the t

2 thoughts on “15. X number of men can finish a piece of work in 30<br />days. If there were 6 men more, the work could be<br />finished in 10 da”

  1. Answer:

    X number of men can finish a piece of work in 30 days. ==> Total work = 30X Men days. — (1)

    If there were 6 men more, the work could be finished in 10 days less. ==> Total work = (X+6)*20 days — (2)

    By (1) and (2) we have:

    30X = (X+6)*20 => 10X = 120 => X = 12 men.

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