Task: Question Answering
Input (English): Problem: mr . john used to purchase certain number of mangoes for $ 360 since the price of mangoes is reduced by 10 % he got 12 more mangoes today . find the original price of 135 mangoes . 
Options: a ) 360 , b ) 380 , c ) 400 , d ) 450 , e ) 412
Output (English): d