How standard cost would update for purchased finished good(IN50)

Hi,

Could you please advise how standard cost would be updated for purchased finished good(IN50).

We are aware that It will be created by inventory transactions,

But, Lets take one scenario.

I haven't defined any cost for item A(GL class IN50).

I adjusted quantity 50 with unit cost as 10.

So, standard cost will be updated  as 10 in P4105.

Now, again I adjusted 20 quantity with unit cost as 30.

Will the standard cost be 30?

Regards,

Tushar