Mr. Sahni employed a worker for a certain work to be done in some days. He pays ₹20 to the worker for each working day and the payment is reduced by ₹ 3 for each non-working day of the worker. For how many days the worker does remain absent from work if at the end of 120 days, he gets ₹ 560 as total remuneration?

• 80
• 60
• 70
• 40