A depreciation rate for a fixed asset is 10% . So its useful life is : ?

My answer is1. Ten years.

If the asset has a depreciation rate of10%, it is assumed to be10 years computed as follows:

Let X be the number of years

0.10 =1/X

0.10(X) =1

X =1 /0.10

X =10 years

 Ten years .

If a Fixed asset is depreciating at a rate of10% in straight line method than the life of an asset is10 years

correct answer is ten years 

thanks 

...............

1- Ten years .............................................................................

The answer is option (1). If on depreciating the asset through original cost method, the life of the asset can be expected to be ten years.