John goes for a jog every 3 days. He went for a jog on Monday, January 5. He went for his next jog on January 8. What was the date of the next Monday on which he went for a jog?
(A) January 12
(D) February 2
(B) January 19
(E) February 9
(C) January 26
Since January 5 is a Monday and Mondays are 7 days apart, then January 12, 19 and 26 are also Mondays.

Since John goes for a run every 3 days, the dates in January on which he runs are January 5 , $8,11,14,17,20,23,26$, and 29.

The first of the Mondays on which John goes for a run after January 5 is January 26.

ANsWER: (C)