The answer is 159 green apples .
Here's why:
14 times 36 = 504
225 + 120=345
504 - 345=159
You multiply 36 by 14 because the result is going to be the total of green , yellow and red apples .
The total is 504 and the total of yellow and red apples is 345 .
You subtract those two to find the total of green apples , which is 159.