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Let initial values of P and Q are 6n and 11n respectively. Then,
(6n + 5): (11n - 84) = 5: 2
12n + 10 = 55n - 420
430 = 43n
n = 10
Therefore, initial sum of P and Q = 6n + 11n = 17n = 17 * 10 = 170
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