In 2012, a survey of household expenditure identified X and Y as the contents of a basket of goods for a price index. The value of the index in 2012 was 100. In 2013, the index was valued at 116. During 2013, the prices of X and Y increased by 10% and 20%, respectively.
In percentage terms, which weights were attached to X and Y in calculating the index?
1 )
A
B
3 )
C
4 )
D
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