If comapny have 15% of other company shares these shares should evaluate using 1- fair value 2- equity method 3- mix of 1 and 2

It should be evaluated using Fair Value, equity for more that20% till50% and more that50% it should be consolidation , less that20% it's cost method and to be evaluated based on the fair value as if it's hold for sale

The Answer is1 i.e Fair Value  of shares 

The standard or preferred method of accounting in these kind of cases is 'Fair Value Method'. The changes in value should be recognised as Earnings. 

It should be evaluated using Fair Value

These shares should be reported using equity method .becuase is % is less than20 as well as50%.