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

### Instruction:
 Greta alipokea barua 10 zaidi kuliko ndugu yake. Mama wa Greta alipokea mara mbili idadi ya barua ambazo Greta na ndugu yake walipokea. Hesabu idadi ya jumla ya barua walizopokea watatu ikiwa ndugu yake Greta alipokea barua 40.


### Response:
 Greta alipokea barua 40+10 = <<40+10=50>>50.
Pamoja, Greta na ndugu yake walipokea barua 50 + 40 = <<50+40=90>>90.
Mama wa Greta alipokea mara mbili idadi ya barua ambazo Greta na ndugu yake walipokea, ambayo ni jumla ya 90*2 = 180 barua.
Jumla, watatu walipokea barua 90+180 = <<90+180=270>>270.