Question: Can you provide an in-depth solution for: Alex is saving up for a new car. He already has $14,500 saved up and the car costs $14,600. He decides that to make the last of the money he will deliver groceries for people in the neighborhood.  He charges $1.5 per trip and then 5% of the price of the groceries. If he makes 40 trips and has saved up enough, how many dollars' worth of groceries did he deliver?Hey there, could you help me solve this math problem: Alex is saving up for a new car. He already has $14,500 saved up and the car costs $14,600. He decides that to make the last of the money he will deliver groceries for people in the neighborhood.  He charges $1.5 per trip and then 5% of the price of the groceries. If he makes 40 trips and has saved up enough, how many dollars' worth of groceries did he deliver?
Answer: 
He needs to save up $100 because 14,600 - 14,500 = 100
He earned $60 off trips because 40 x 1.5 = 60
He earned $40 off groceries because 100 - 60 = 40
He delivered $800 in groceries because 40 / .05 = 800