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  1. The average monthly income of P and Q is ₹5, 050. The average monthly income of Q and R is ₹6, 250 and the average monthly income of P and R is ₹5,200. The monthly income of P is
    1. ₹3, 500
    2. ₹ 4, 000
    3. ₹ 4, 050
    4. ₹ 5, 000
Correct Option: B

The average monthly income of P and Q = ₹5, 050.
Total monthly income of P and Q = 2 × 5050 = ₹ 10100
The average monthly income of Q and R = ₹6, 250
Total monthly income of Q and R = 2 × 6250 = ₹ 12500
and the average monthly income of P and R = ₹5,200
Total monthly income of P and R = 2 × 5200 = ₹ 10400
On adding all three,
Total monthly income of 2(P + Q + R) = ₹ (10100 + 12500 + 10400) = ₹ 33000

∴ Total monthly income of (P + Q + R) =
33000
= ₹ 16500
2

∴ P’s monthly income = (16500 – 12500) = ₹ 4000



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