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

### Instruction:
David swims the 100-meter freestyle in 48 seconds.  He swims the 100-meter backstroke 4 seconds slower than he swims the 100-meter freestyle, he swims the 100-meter butterfly 3 seconds slower than he swims the 100-meter backstroke, and he swims the 100-meter breaststroke 2 seconds slower than he swims the 100-meter butterfly.  What is the combined length of time, in seconds, it would take for him to swim all four 100-meter events (the freestyle, the backstroke, the butterfly, and the breaststroke)?

### Response:
 David anaswim mita 100 ya backstroke kwa sekunde 48+4=52.
Anaswim mita 100 ya butterfly kwa sekunde 52+3=55.
Anaswim mita 100 ya breaststroke kwa sekunde 55+2=57.
Jumla yake, itachukua David sekunde 48+52+55+57=212.