Price of one kg apple is half of that of mango» Serena buys 5 kg apples and 5 kg of mangoes. If the price of mango is Rs. 65 per kg, find the amount of money spent by Serena.

• A. Rs. 407.50     
• B.        Rs. 487.50   
• C. Rs. 485.50    
• D.        Rs. 489.85
• E. None of these