jassims aunt visits every five days. Janusan uncle visits every 3 days. the last time the aunt and uncle both visited on the same day was november 3rd. whats is the next day they will both visit on the same day

Answer 1

So their visits coincide every 15 days, the LCM of 5 and 3.
I will let you do the counting of 15 days from Nov 3

Answer 2

the LCM (least common multiple) of 3 and 5 is 15 ... so, 15 days