 <translate> The question is: Lucy lost one-third of her money. She then spent one-fourth of the remainder, and only left with $15. How much money did Lucy have at the beginning?
Step-by-step reasoning process: The $15 is 1 - 1 / 4 = 3 / 4 of the money left. Since 3 / 4 is equal to $15, then 1 / 4 is equal to $15 / 3 = $5. So Lucy had $5 x 4 = $20 left after losing 1 / 3 of her money. Hence, $20 is 1 - 1 / 3 = 2 / 3 of the money that Lucy had at the beginning. Since 2 / 3 is equal to $20, then 1 / 3 is equal to $20 / 2 = $10. Therefore, Lucy had $10 x 3 = $30 at the beginning.
 <yor> Ìbéèrè náà ni pé, Lucy pàdánù ìdámẹ́ta owó rẹ̀. Ó wá ná ìdá mẹ́rin lára owó tó ṣẹ́ kù, ó sì ní dọ́là mẹ́ẹ̀ẹ́dógún péré lọ́wọ́. Owó mélòó ni Lucy ní nígbà tó bẹ̀rẹ̀? Àbá tí wọ́n máa ń gbé yẹ̀ wò lẹ́ẹ̀kan-lẹ́ẹ̀kan: Owó tó wà nínú dọ́là mẹ́ẹ̀ẹ́dógún náà jẹ́ 1 - 1 / 4 = 3 / 4 lára owó tó ṣẹ́ kù. Níwọ̀n ìgbà tí 3/ 4 jẹ dọ́là 15, nígbà náà 1 / 4 jẹ dọ́là 15 / 3 jẹ dọ́là 5. Nítorí náà, Lucy ní $5 x 4 = $20 tó kù lẹ́yìn tó pàdánù ìdajì owó rẹ̀. Nítorí náà, $20 jẹ́ 1 - 1 / 3 = 2 / 3 owó tí Lucy ní ní ìbẹ̀rẹ̀. Níwọ̀n ìgbà tí 2 / 3 jẹ dọ́là 20, nígbà náà 1 / 3 jẹ dọ́là 20 / 2 = dọ́là 10. Nítorí náà, Lucy ní $ 10 x 3 = $ 30 ní ìbẹ̀rẹ̀. 