An 24hour digital clock is gaining three minutes every hour .If you set it to the correct time at 6 p.m.on Saturday,when will it show the correct time again? Answer must be in full form

Answer 1

it must gain 24 hours.
3 minutes is 1/20 hour

24/(1/20) = 240 hours = 10 days

Answer 2

oops 480 hours - 20 days