Q. If 3 men and 2 boys together earn 306 in 9 days while 7 men and 3 boys earn 639 in the same time. In how many days will 8 men and 6 boys together earn 376?

• No of days is same in both case =9 days
  
  3 M + 2 B =306
  7 M + 3 B =376
  
  on solving u will get M = 72 and B = 45 .
  
  The value of M and B represents the wages of single man and boy respectively for 9 days
  
  for single day for man 72 / 9 = 8 Rs
  for single day for boy 45/9 = 5 Rs
  
  8M + 6B =376 here we have to find no of days (X)
  
  X(8M+6B) = 376
  
  
  subtitute single day value ,M=8 and B=5 rs respectively
  
  94 x = 376
  
  x= 4
  
  So it takes 4 days to earn 376 rs by 8 men and 6 boys
• 10 years agoHelpfull: Yes(3) No(1)
• Men Boys Days Earn
  3 2 9 306
  7 3 9 639
  8 6 ? 376..... assume '?' as 'x'
  so (3*7*8)+(2*3*6)+(9*9*x)=306+639+376
  81x=1067.... x=13.17 days
• 10 years agoHelpfull: Yes(1) No(4)
• answer is 4
  9*(3/x+2/)=306
  9*(7/x+3/y)=639
  solving x=1/8,y=1/5
  now putting the values of x and y in the equation
  n*(8/x+6/y)=376
  we get n=4
• 10 years agoHelpfull: Yes(1) No(0)