Answer: ₹500
Step-by-step explanation:
Harry earned ₹500 every day.
₹40,000 ÷ 80 = ₹500
₹40,000 divided by 80 will turn 80 days to 1 day which answers your question.
Both answers are not the same. You are correct and your friend is wrong. The situation your teacher gave could have only one other interpretation that would be acceptable and that would be 8t+3 because it is the same number just in a different order.
1) -10,-2
2) -13,-3
3) 2,2
4) -5,3