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

### Instruction:
 Jerome上个月买了5辆新玩具车。这个月他买了两倍的数量，所以现在他有40辆玩具车。Jerome最初有多少辆玩具车？


### Response:
 Jerome这个月买了2 x 5 = <<2*5=10>>10辆玩具车。
所以他总共买了10 + 5 = <<10+5=15>>15辆玩具车。
因此，Jerome最初有40 - 15 = <<40-15=25>>25辆玩具车。