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Question 1:
Ten 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?
A. 45
B. 40
C. 35
Feedback 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(4x-10)?6x-20=4x-10=> 2x=10=>x=5
Total of their present ages=3x+4x=7x=7×5=35
D. 30

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