But the question never stated that 108 and 23 meant anything more than numbers you use in the formula. So, if she were given 216 phones per week, and she fixes

But the question never stated that 108 and 23 meant anything more than numbers you use in the formula. So, if she were given 216 phones per week, and she fixes 46 per day, then the formula would hold true. So the question does not provide enough information to select the answer they have designated as correct. (This is many days later and I no longer have the question in front of me, and I'm not willing to invest the time to find it. But this was my thinking when I posted this).