Below is an instruction that describes a task. Write a response that appropriately completes the request in Thai. Please answer in Thai.

### Instruction:
Randy has some money. He spent $10 buying his lunch. He spent a quarter of the money he had left on an ice cream cone. If the ice cream cone cost $5, what is the amount of money, in dollars, Randy had at first?

### Response:
 แรนดี้เหลือเงิน 5 x 4 = <<5*4=20>>20 ดอลลาร์หลังจากซื้ออาหารกลางวัน
แรนดี้มีเงินตอนแรก 20 + 10 = <<20+10=30>>30 ดอลลาร์.