A. Just write an expression:

That's your answer.
B. Simplify the above expression to get:

So your answer would be, "He had $132.63 left in his account."
Answer:
$ 1.50 x 25= 37.50
Step-by-step explanation:
Subtract that from $ 87.50 you get remainder $ 50.00.
Therefore grocer paid $ 50.00 for 25 bags. $ 50.00 divided by 25= $ 2.00 per bag.