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

### Instruction:
The battery charge in Mary’s cordless vacuum cleaner lasts ten minutes. It takes her four minutes to vacuum each room in her house. Mary has three bedrooms, a kitchen, and a living room. How many times does Mary need to charge her vacuum cleaner to vacuum her whole house?

### Response:
 Mary ana vyumba 3 + 1 + 1 = <<3+1+1=5>>5 katika nyumba yake.
Kwa dakika 4 kwa chumba, itamchukua dakika 4 * 5 = <<4*5=20>>20 kusafisha nyumba yake nzima.
Kwa chaji ya dakika 10, atahitaji kuchaji kifaa chake cha kusafisha nyumba 20 / 10 = 2 mara ili kusafisha nyumba yake nzima.