Ten years ago, P was half of Q in age. If the ratio of their present ages is 3:4, what will be the total of their present ages?

A. 45

B. 40

C. 35

D. 30

• 12+5=17
  17th position from right = 10th position from left
  
  no. of students = 17+10-1 = 26
• 10 years agoHelpfull: Yes(28) No(3)
• Let the present age of P and Q be 3x and 4x respectively.
  
  Ten years ago, P was half of Q's age
  => (3x – 10) =
  1
  2
  12(4x – 10)
  => 6x – 20 = 4x – 10
  => 2x = 10
  => x = 5
  
  total of their present ages = 3x + 4x = 7x = 7 × 5 = 35Let the present age of P and Q be 3x and 4x respectively.
  
  Ten years ago, P was half of Q's age
  => (3x – 10) =
  1
  2
  12(4x – 10)
  => 6x – 20 = 4x – 10
  => 2x = 10
  => x = 5
  
  total of their present ages = 3x + 4x = 7x = 7 × 5 = 35
• 9 years agoHelpfull: Yes(6) No(0)
• no of students 17+10-1=26 because we r taking george's position twice once from right nd again from left. thus 1 is deducted
• 10 years agoHelpfull: Yes(4) No(2)
• P/Q=3/4 THEREFORE P= 3Q/4
  And (P-10)=(Q-10)/2
  2(P-10)= (Q-10)
  2P-20=Q-10
  2P-Q=10
  
  Now putting value of P(i.e. P=3Q/4)
  2*3Q/4 -20=Q-10
  By solving this u'll get Q=20
  Put the value of Q in P=3Q/4 and get P=15
  Now Add P+Q=15+20= 35 is answer
• 9 years agoHelpfull: Yes(4) No(0)
• A
  Let the present age of P and Q be 3x and 4x respectively.
  Ten years ago, P was half of Q in age
  => 2(3x � 10) = (4x � 10)
  
  => 6x � 20 = 4x � 10
  
  => 2x = 10
  
  => x = 5
• 9 years agoHelpfull: Yes(3) No(0)
• Rakesh could you plz tell that why we are doing -1.. plzz..
• 10 years agoHelpfull: Yes(1) No(0)
• ans: c
  let P's age be 'x' and Q's age be y
  so, x-10=0.5(y-10)
  2x-y=10
  now their age's are in the ratio 3:4
  x=3y/4,
  6y-4y=40, y=20; and x=15,
  total their present ages =35
• 8 years agoHelpfull: Yes(1) No(0)
• 13 Students
• 10 years agoHelpfull: Yes(0) No(7)
• 5th position from left is peter
  george new position is 10th
  5+10=15 students
• 10 years agoHelpfull: Yes(0) No(3)
• can you explain clearly?
• 10 years agoHelpfull: Yes(0) No(0)
• cannot be solved because the position of Peter is not fixed with respect to George.
• 10 years agoHelpfull: Yes(0) No(0)
• http://www.careerbless.com/aptitude/qa/ages1.php
• 9 years agoHelpfull: Yes(0) No(0)