यदि 8 पुरुष या 12 लड़के किसी काम को 16 दिनों में पूरा कर सकते है , तो 20 पुरुष तथा 6 लड़के कितने सिनो में काम पूरा करेंगे ?

Options

A. `5(1)/(3)` days
B. `6(1)/(3)` days
C. `8(1)/(3)` days
D. `7(1)/(3)` days

Answer

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Explanation

(a) Acording to question
8 men =12 boys (description same as Q 104)
4 men =6 boys
20 men + 6 boys =(0 +4) men
=24 men
8 men can do a piece of work in
`=(16xx8)/(24)=5(1)/(3)`
alternate
`8M xx16=12 Bxx16`
` 8M = 12 B `
`(M)/(W)=(3)/(2)`
total work `=8xx3xx16 ` units
Efficiency of (20m+ 6B)
`=20xx3+6xx2=72`units /day
No . of days `=5(1)/(3)` days