3 पुरुष या 5 महिलाएँ किसी काम को 12 दिनों में समाप्त कर सकते है , तो 6 पुरुष तथा 5 महिलाएँ काम को कितने दिनों में समाप्त करेंगे ?

Options

A. 20 days
B. 10 days
C. 4 days
D. 15 days

Answer

a

Explanation

(c ) According to qestion ,
3 men = 5 women ( As they complete the same work in same time )
6 men + 5 women = 6 men = 9 men
if 3 men does a work in 12 days
1 men does does a work in 12 days 1 men does a work in `=12xx3`
9 men does a work in `(12xx3)/(9)`
= 4 days
alternate
`3M xx12 = 5 W xx12`
`(M)/(W) =(5)/(3)`
total work `=3xx5 xx12=15xx12` = 180 units
`=(6xx5+5xx3)= 45`
time taken by ( 6M + 5 W )
`(180) /(45) =4`days \