Mark had three bags of jelly beans if he ate 1/5 of a bag each day how long would his jelly bean supply last

Total bags = 3
He ate = 1/5 everyday

So, it last for = 3/ 1/5 = 3 * 5 = 15

In short, Your Answer would be 15 days

Hope this helps!

The year before the 10s so it was like when caveman were alive