Task: Question Answering
Input (English): Problem: a farmer has an apple orchard consisting of fuji and gala apple trees . due to high winds this year 10 % of his trees cross pollinated . the number of his trees that are pure fuji plus the cross - pollinated ones totals 170 , while 3 / 4 of all his trees are pure fuji . how many of his trees are pure gala ? 
Options: a ) 30 , b ) 33 , c ) 55 , d ) 77 , e ) 88
Output (English): a