Denver Inc. has an old computer system. The computer originally costs Denver $90,000 and its current book value is $35,000. Answer the following questions: Do not use the account name of book value. There is no such account name as book value in accounting*

1) What is accumulated depreciation on the Denver's computer?

2) Journal entry if Denver discards the computer (for nothing).

3) Journal entry if Denver sells the computer for $90,000.

Show proper calculation