Abraham is buying some toiletries and creates a budget of $60 for his shopping. He buys 4 shower gels for $4 each, a tube of toothpaste for $3, and a box of laundry detergent. If he has $30 remaining in his budget, how much money, in dollars, did Abraham spend on the box of laundry detergent? Give me reasons, before answering the question
Shower gel costs Abraham 4 shower gels * $4 = $16. So the shower gel and toothpaste combined have cost him $16 + $3 = $19. He had money remaining in his budget so the total cost of his shopping must have been $60 – $30 = $30. The box of laundry detergent therefore cost him $30 – $19 = $11. So the final answer is 11.