 <translate> Let X be the price of the shirt. The price of the coat is X * 3. The total amount is X + X * 3 = $600. Combining like terms, we get X * 4 = $600. Dividing both sides by 4, we get X = $600 / 4 = $150. The final answer: 150. <yor> Jẹ́ kí X jẹ́ iye tí wọ́n ń ta aṣọ náà. Iye owó aṣọ náà ni X * 3. Àpapọ̀ iye náà ni X + X * 3 = $600. Bá a bá pa àwọn ọ̀rọ̀ tó jọra pọ̀, a ó rí i pé X * 4 = $600. Tí a bá pín ìhà méjèèjì sí mẹ́rin, a ó rí i pé X = $600 / 4 = $150. Ìdáhùn tí wọ́n fún un níkẹyìn ni pé: 150. 