Weight of M,D and I is 74.Sum of D and I is 46 greater than M.I is 60% lessthan D.what is D weight

• m+d+i=74
  d+i=m+46
  From above m=14
  d-60/100d=i ie 2/5d=i
  therefore; from above
  d+i=60
  d+2/5d=60
  d=42.9
  
  
• 11 years agoHelpfull: Yes(58) No(9)
• m+d+i=74..........1
  
  let m=x
  
  d+i=x+m
  
  from 1 x+46+x=74
  
  2x=28
  x=14
  
  now
  
  let d=y
  i is 60 % less than d
  
  there fore i =40y/100
  
  d+i=x+46
  
  x=14
  d=y
  i=40y/100
  
  substitute ol value y=43 approx
• 11 years agoHelpfull: Yes(22) No(5)
• 10 years
  M+D+I=74
  D+I+46=M
  Let age of D be D then, I=0.4D
  Solving these eq we get D=10,I=4 & M=60
• 11 years agoHelpfull: Yes(14) No(38)
• Given m+d+i=74----------------------------------(1)
  d+i+46=m==>>d+i=m-46----------------------(2)
  i=0.4d----------------------------(3)
  solving 1 and 2 results in the value of m=60
  sub m=60 in 1 we get d+i=14------(4)
  solving 3 and 4 gives d=10 and i=4
  
  
  
  
• 11 years agoHelpfull: Yes(9) No(5)
• m + d + i = 74 ------------ (1)
  d + i = m + 46 ------------ (2)
  putting value of d + i from equation 2 in equation 1
  =>m + m + 46 = 74
  =>2m = 28
  =>m = 14
  According to question
  d - (d*60/100) = i
  =>d - (3d/5) = i
  =>5d-3d = 5i
  =>2d = 5i
  => i = 2d/5 -------- 3
  
  putting value of i and m in equation 2
  d + 2d/5 = 46 + 14
  7d = 60 * 5 = 300
  d = 300/7 = 42.85
• 11 years agoHelpfull: Yes(8) No(3)
• M+D+I=74
  D+I=M+46
  0.4D=I
  
  Solving,
  D + 0.4D=M+46
  1.4D=M+46.....(1)
  
  M+D+0.4D=74
  M+1.4D=74........(2)
  
  adding (1) and (2)
  2.8D=46+74
  Hence, D=120/2.8
  
  
• 11 years agoHelpfull: Yes(5) No(3)
• Ans=10 years
  M+D+I=74
  D+I+46=M
  Let age of D be D then, I=0.4D
  Solving these eq we get D=10,I=4 & M=60
  
  this is correctttttttttttttttttttt.
• 11 years agoHelpfull: Yes(4) No(16)
• m+d+i=74
  d+i+46=m..........(1)
  i=0.4d
  m=1.4d+46
  put it in equn 1
  d=10
  
• 11 years agoHelpfull: Yes(3) No(5)
• 42.85 is correct
• 11 years agoHelpfull: Yes(3) No(3)
• bt how dis possible that d=10..
  when it is given in question that sum of d and i is 46 greater than m??
  then the eq. d+i+46= m; is wrong....
• 9 years agoHelpfull: Yes(3) No(1)
• M+D+I=74
  D+I=46+M
  I=0.4D
  Solving these eq we get D=85.7
• 11 years agoHelpfull: Yes(1) No(18)
• M+D+I=74 ....1
  
  M+I-M=46 ....2
  
  I=D(1-60%)= 0.4D ...3
  
  Putting value of I by EQ 3 in EQ 1
  
  We get
  M+1.4D=74 ...4
  
  & in EQ 2
  
  We get
  1.4D-M=46 ...5
  
  On Adding eq 4&5 we get
  D=50.
• 11 years agoHelpfull: Yes(1) No(9)
• Ans: 10
  M + D + I = 74 ⇒ M = 74 -D - I
  M = D + I + 46
  I = 410 D
  74 - D - I = D + I + 46
  74 - D - 410 D = D + 410 D + 46
  ⇒ D = 10
  
• 9 years agoHelpfull: Yes(1) No(3)
• M + D + I=74 ----------(EQN 1)
  D + I =M + 46 ----------(EQN 2)
  
  FROM EQN 1 & 2
  2(D+I)=120
  D+I=60 ----------(EQN 3)
  
  ALSO
  I=D-(D*6)/10
  =>I=7D/5 (PUT THIS IN EQM 3)
  WE GET
  D=42.8
• 8 years agoHelpfull: Yes(1) No(0)
• Explain d+2/5d part in 1st solution
• 8 years agoHelpfull: Yes(0) No(0)
• How d+i+46=m possible?
  It's clearly mentioned in question Sum of D and I is 46 greater than M
• 8 years agoHelpfull: Yes(0) No(0)
• those who got d=10 how the f**k is m=d+i+46
  
• 8 years agoHelpfull: Yes(0) No(0)