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
