¤ + ¤ + ¤ =30, now Fill the boxes using (1, 3, 5, 7, 9, 11, 13, 15)

Solve this..

?+?+?=30

Fill the ? using
(1, 3, 5, 7, 9, 11, 13, 15)

Help: U can also repeat the numbers.

From: This question came in UPSC Final Exams held in Dec 2013.

You will be glad to note that only Gaurav Agarwal
(IAS Topper) could solve it.

Here are some answers;

1. Its written that *fill the boxes* not *fill all the three boxes*, if we need to fill all the 3 boxes using given series then the question may be wrong or just add O in third box.

Like this; 15+15+=30
     Or 15+15+0=30

2. There is written that u can repeat the numbers so repeat it like below

  (1+3)+(5+7)+(7+7)=30