if 8 men or 17 boys can do a piece of work in 26 days, how many days will it take for 4 men and 24 boys to complete a piece of work 50 x 0.9 times great?

• shortcut:: if x men or y women can do a piece of work in t days, then (p men + q women) can do the same work in t/(p/x+q/y) days.
  here t=26, p=4, q=24, x=8, y=17
  so 26/(4/8+24/17)
  =>(26*34)/65
  Now ,
  50*0.9 times great they can do it in = (26*34*9*50)/(65*10)
  =612 days
• 9 years agoHelpfull: Yes(10) No(3)
• (17*26)/1=(17/2+24)x)50×.9
  X=612
• 8 years agoHelpfull: Yes(1) No(1)
• r+h=16
  and surface area=2*(pie)*r(h+r)=704 (given)
  =2*(22/7)*r*(16)=704 (r+h=16 given)
  = r =(352/16)*(7/22)
  = r =7
  r+h=16 => h=16-7=9 =>h=9
  Volume=(pie) *(r^2)*h
  =22/7 * 7*7 *9
  =22*7*9
  =1386 ans
• 8 years agoHelpfull: Yes(0) No(2)