36. A clock gains 20 minutes each day. if the correct time is indicated now , in how many days will it again show the first correct time?

Question

Please show work/explain

A.8
B.18
C.20
D.36
E.72

Answer 1

It must gain 12 hours, at 1/3 hour per day.

Looks like 36 days to me.

(Assuming an analog clock -- a digital clock will take twice that long.)