# Ethnicity

Share of ethnicity XY is 26%, which is 1/9 more than in the prewar period.

What was the share of that ethnicity in the pre-war period?

Correct result:

p =  23.4 %

#### Solution:

$26/100 \cdot x = (1+1/9)p/100 \cdot x \ \\ 26= (1+1/9)p \ \\ p = \dfrac{ 26 }{ 1+1/9} \ \\ p = 23.4 \%$

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