# One watch is 1 minute slow at 1 pm on Tuesday and 2 minutes fast at 1 am on Friday. When did it show that correct time?

##
(1) 5:00 am on Wednesday

(2) 5:00 pm on Wednesday

(3) 9:00 am on Wednesday

(4) 9:00 pm on Wednesday

(1) 5:00 am on Wednesday

(2) 5:00 pm on Wednesday

(3) 9:00 am on Wednesday

(4) 9:00 pm on Wednesday

##### 1 Answer

(3) 9:00am Wednesday

#### Explanation:

The correct time will be shown when the watch has gained 1 minute.

We are told that the watch gains 3 minutes between 1pm Tuesday and 1am Friday.

First let's convert the time duration to minutes.

1pm Tuesday to 1pm Thursday is 2 full days

1pm Thursday to 1am Friday is 12hr

Total time

So the watch gains

But we only want 1 min gain for the watch time to be correct.

This will happen after

Let's convert this back to hours and minutes so we can add it to the start time, to find the time that the watch shows the correct time.

1pm Tues