Eight years ago, P was half of Q's age. If the ratio of their present ages is 3:4 what will be the total of their present ages? Choose the correct choice from the following:
A) 33
B) 67
C) 28
D) 31
E) 35
Let present age of P and Q be 3x3x and 4x4x respectively.   Eight years ago, P was half of Q's age   â‡’(3xâˆ’8)=1/2(4xâˆ’8)   â‡’6xâˆ’16=4xâˆ’8   â‡’2x=8   â‡’x=4   Total of their present ages   =3x+4x=7x3 +4= 
<gadget id="calculator">3 +4</gadget>
<output>7</output>
7x=7Ã—4=28   28
<result>C</result>
Eight years ago, P was half of Q's age. If the ratio of their present ages is 3:4 what will be the total of their present ages?