There are ‘x’ chocolates in box A and ‘y’ chocolates in box B. 9 chocolates have been taken away from the total. Write an expression for the remaining chocolates.

The correct option is A $x+y-9$
Number of chocolates in box A = x
Number of chocolates in box B = y
Total number of chocolates = x + y
Number of chocolates taken away = 9
Remaining chocolates = Total chocolates - Chocolates taken away
= x + y – 9.