An employee pays Tk.100 for each day a worker and forfeits Tk.20 for each day he idle. At the end of 50 days, if the worker got Tk.2600, for how many days did the worker remain idle?

• ক 18 days
• খ 21 days
• গ 20 days ✅ সঠিক উত্তর
• ঘ 23 days