Suppose the elements X and Y combine to form two compounds XY2 and X3Y2. When 0.1 mole of XY2 weighs 10 g and 0.05 mole of X3Y2 weighs 9 g, the atomic weights of X and Y are [NEET 2016]
(A) 40, 30
(B) 60, 40
(C) 20, 30
(D) 30, 20
(A) 40, 30
(B) 60, 40
(C) 20, 30
(D) 30, 20
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