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

### Instruction:
 迈克和泰德种了番茄。早上，迈克种了50颗番茄种子，而泰德种了迈克的两倍。下午，迈克种了60颗番茄种子，而泰德比迈克少种了20颗。他们总共种了多少颗番茄种子？


### Response:
 泰德早上种了迈克的两倍，所以他种了2 x 50 = <<2*50=100>>100颗番茄种子。
下午，迈克种了60颗种子，而泰德比迈克少种了20颗，即60-20 = <<60-20=40>>40颗。
总体而言，迈克和泰德总共种了50 + 100 + 60 + 40 = <<50+100+60+40=250>>250颗番茄种子。