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  Choose the correct choice.
A) 5 B) 6 C) 7 D) 8 E) 9
Let the present age of P and Q be 3x and 4x respectively.   Ten years ago, P was half of Q in age   =&gt; 2(3x – 10) = (4x – 10)   =&gt; 6x – 20 = 4x – 10   =&gt; 2x = 10   =&gt; x = 5   5nswer: 5
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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