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Two unknown resistance X and Y are connected to left and right gaps of a meter bridge and the balancing point is obtained at 80 cm from left. When a 10Ω resistance is connected in parallel to X, the balancing point is 50 cm from left. The values of X and Y respectively are 

(1) 40Ω , 9 Ω  

(2) 30 Ω, 7.5 Ω 

(3) 20 Ω, 6 Ω 

(4) 10Ω, 3Ω 

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Correct option (2)

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