The price of Darjeeling tea ( in rupees per kilogram) is 100 + 0.10 n, on n-th day of 2007 (n=1, 2, 3, ....100), and then remains constant. On the other hand, the price of Ooty tea ( in rupees per kilogram) is 89 +0.15 n on the n-th day of 2007 (n=1,2, ....365). On which date in 2007 will the prices of these two varieties of tea be equal?

- May 21
- April 11
- May 20
- April 10
- June 30