I think it would take 15 days that’s what I got trying to figure out this question
She would have to shop there 10 time to get the 100% back.
Ok pretty sure the probability of a 5 is 1/5
The probability of a # greater than 3 is 2/5
And the probability of a 2 or 5 is 2/5
(1/5 is 20% and 2/5 is 40% if you need those)