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

### Instruction:
To eat to when she gets full, Michaela needs 20 oranges. Cassandra needs twice as many oranges as Michaela to eat until she gets full. If they picked 90 oranges from the farm today, how many oranges would remain after they've both eaten until they were full?

### Response:
 Kwa kuwa Michaela anahitaji machungwa 20 ili kula mpaka ajae na Cassandra anahitaji mara mbili ya Michaela ili kula mpaka ajae, Cassandra anahitaji machungwa 2*20 = <<20*2=40>>40 ili kula mpaka ajae.
Wote wanakula 20+40 = <<20+40=60>>60 machungwa ili kujaza tumbo.
Ikiwa wamechuma machungwa 90 leo, baada ya kula 60 pamoja, machungwa yaliyobaki ni 90-60 = <<90-60=30>>30.