The question is, why do you want the record type id? Is it so that you can limit your query? In that case

Select Id
From account
where RecordType.developername = 'Business'

and you have saved a query :)

You can also use it on related objects

Select Id
From case
where account.RecordType.developername = 'Business'

The question is, why do you want the record type id? Is it so that you can limit your query? In that case

Select Id
From account
where RecordType.developername = 'Business'

and you have saved a query :)

You can also use it on related objects

Select Id
From case
where account.RecordType.developername = 'Business'

And if you really need the ID for some reason, maybe you can get it while you are getting your data?

Select Id, RecordTypeID
From account