4 men and 6 women together can do a work in 8 days

Report

Report an issue

Name

Email

Message

Submit

Cancel

RRB Junior Clerk Exam (Allahabad) 2009 click here to view all questions

4 men and 6 women together can do a work in 8 days while 3 men and 7 women together can do the same work In 10 days. 10 women together can do this Work in

A24 days

B32 days

C40 days

D36 days

All DiscussionsClick here to write answer

Correct Answer: C [40 days] Explanation: Let m be a man's one day effort and y be a woman's one day effort.  $4m+6y=\frac{1}{8}$ $3m+7y=\frac{1}{10}$ $10y=\frac{1}{??} => ??=\frac{1}{10y}$ $12m+18y=\frac{3}{8}$ $12m+28y=\frac{4}{10}$ $=> 10y = \frac{4}{10}-\frac{3}{8} => 10y = \frac{1}{40}$ $\text{Hence ?? = 40 days.}$ Nithin K ? answered Apr 21 '2018 at 22:27 All Comments

Post your answers here:

Rich Text Editor, message-ans

Editor toolbarsClipboard/Undo Cut Copy Paste Paste as plain text Paste from Word Undo RedoEditing Spell Check As You TypeLinks Link Unlink AnchorInsert Image Math Table Insert Horizontal Line Insert Special CharacterTools MaximizeDocument SourceBasic Styles Bold Italic Strikethrough Remove FormatParagraph Insert/Remove Numbered List Insert/Remove Bulleted List Decrease Indent Increase Indent Block QuoteStylesStylesStylesFormatFormatabout About CKEditor

Press ALT 0 for help

◢Elements path 

Post

Post your comments here:

Message

140 remaining

Post

Cancel