Okay. So Cheese's sister would have to pay $60 for a stand and with making $30 per day, it would take two days to make back the cost of the total stand. At that point, Cheese would have made $40. Then you have the third day, which the sister would have made $30 total, while Cheese would've made $60 total. The fourth day, the sister would've made $60 total, while Cheese would've made $80 total. The fifth day, the sister would've made $90 total, while Cheese $100. But this is where it breaks even. On the sixth day, the sister would've made $120 total and Cheese would've made $120 total. So it would take 6 days for Cheese's sister to make the same amount that Cheese herself has made.
