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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 ?A. `5(1)/(3)` daysB. `6(1)/(3)` daysC. `8(1)/(3)` daysD. `7(1)/(3)` days |
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Answer» Correct Answer - ad (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 |
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