9 children can complete a piece of work in 360 days. 18 men can complete the same piece of work in 72 days and 12 women can complete the piece of work in 162 days. In how many days can 4 men, 12 women and 10 children together completer the piece of work?
9 children can complete a work in 360 days. 1 child can complete a work in 9 × 360 days = 3,240 days ∴10 children can complete a work in3240/10 days = 324 days 18 men can complete a work in 72 days. 1 men can complete a work in 18 × 72 days = 1,296 days ∴4 men can complete a work in 1296/4 = 324 days 12 women can complete a work in 162 days. Now, 4 men + 12 women + 10 children’s work =1/324+ 1/162+1/324 = (1+2+1)/324 = 4/324= 1/81work Therefore, 4 men, 12 women and 10 children can complete a work in 81 days. Alternate Method: lets make time of all 3 equal , we can see 18 is common in 360, 72 and 162 So 180C or 72M or 108 W can do this job in = 18 days Hence 10c & 4M & 12 W can do this job in = 18/{10/180 + 4/72 + 12/108} = 18/ {1/18 + 1/18 + 1/9} = 18/ (4/18) = 81 days
A “Caveat” shall not remain in force after the expiry of -
Which of the following is true with respect to issue of shares at a discount?
In which of the following cases, the Supreme Court has observed “the present generation has no right to interfere with the safety of the future genera...
When property in goods is transferred to the buyer and he refuses to pay for the goods_______
As per the Specific Relief Act, 1963, Specific relief can be granted
Precept is defined under which section of CPC?
Any person aggrieved by the order of Securities Appellate Tribunal under PFRDA Act may appeal to the Supreme Court
Which Section of the Code of Criminal Procedure provides for the confirmation by the High Court an order of death penalty passed by Session Court prior...
Which of the following is the correct spelling?
Which of the following is included in the definition of engravings under Copyright Act 1957?
I. Etchings
...