Which is the Better Clock?

Last Problem:

The doctor gives you 3 pills. You need to take
one pill each half-hour. How long will it be
until you are done taking the pills?

Answer:

One hour. For example, if you take the
first pill at 1:00, the second at 1:30
and the third at 2:00, all three pills are
taken within a one hour time span.

Today’s Problem:

You have two clocks – one doesn’t work at all
and the other loses a minute every day.

Which is the better performing clock?

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