Emily and Lucas are comparing their weekly earnings from their part-time jobs. Emily earns $150 per week, but she spends $30 on transportation and $20 on meals. Lucas earns $180 per week, but he spends $50 on transportation and $25 on meals. After their expenses, how much more money does Lucas have left compared to Emily each week? Let's think step by step and output the final answer within \boxed{}.
user