Just to check if I'm understanding the question: The information given here means that, as of today, each of the currencies has a value, in rupees, equal to the listed "closing point" and that value then increases/decreases each day by exactly the listed "change on day" amount. Is that correct?
Assuming that's correct, you know that one Sterling is equivalent to 56.58 rupees after 0 days (i.e. today). And it should be clear that after 1 day, one Sterling will be equivalent to 56.92 rupees. But how did you know that answer? What mathematical operation did you use? What will the value be after 2 days? After 3 days? After 10 days? In each of these cases, which operation did you use? Can you think of another operation which models repeated application of this operation? Based on this, if you let \(t\) stand for the number of days passed, can you create an expression for the value of a Sterling in terms of \(t\)? If you repeat the exact same line of reasoning and create an expression for the value of a Euro in terms of \(t\), you can then use these expressions to determine the value of \(t\) that results in the value of a Euro exceeding that of the value of a Sterling.