The speedy problem

Algebra Level 3

A and B started from P and Q towards each other.They met after 6 hours.After meeting A increased his speed by 2 kmph and B decreased his speed by 2 kmph. .Both proceeded to their destinations at their new speeds and reached them simultaneously.Twice the initial speed of B was 18 kmph more than the initial speed of A.Find the initial speed of A.(in kmph).

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