I HAVE THE ANSWER I JUST NEED HELP WITH EXPLANATION

The Sizemore Company recently sold 2,500 units for $100 each; reported total variable costs of $162,500 and net income of $47,500. If the company's price per unit increased by $5 and its volume decreased by 250 units, what would be the company's net income? 50,000 (with margin: 0) Tip: Create a contribution margin model BEFORE any changes and use it to figure out the things not specifically listed (e.g. variable costs per unit, fixed costs and contribution margin). Then, create a contribution margin model AFTER the changes, update those items that changed (e.g. price per unit and volume) and then recalculate net income