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May 28, 2010

Anil & Mail



Anil has to receive a mail from Station, but the train arrives
early and the mail is then sent by a cart to him. Both Anil and
cart met in the middle in 30 mins. Due to this in whole journey
anil saved 20 mins, due to eary arrival of train.

Now tell me how early the train arrived?



May 7, 2010

Profit Maximization



A manufacturer can sell X items (X >= 0) at a price of Rs. (330 - X)
each. The cost of producing X items is ((X^2) + 10X + 12).
Determine the no. of items sold so that the manufacturer can make
the maximum profit..