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

### Instruction:
Miriam currently has 30 marbles, but she used to have more. Miriam gave her brother 60 marbles, gave her sister twice that amount and gave her friend Savanna three times the amount she currently has. How many marbles did Miriam start with?

### Response:
 Ikiwa Miriam anabaki na mabulinge 30 baada ya kumpa ndugu yake mabulinge 60, basi alikuwa na mabulinge 30+60 = <<30+60=90>>90 kabla ya kutoa mabulinge yoyote.
Dada yake Miriam anapokea mara mbili ya mabulinge aliyompa ndugu yake, ambayo ni mabulinge 60*2 = <<60*2=120>>120.
Jumla ya mabulinge kabla ya kutoa yoyote ni 120+90 = <<120+90=210>>210.
Savannah anatarajia kupokea mara tatu ya mabulinge ambayo Miriam anapaswa kubaki nayo, ambayo ni mabulinge 3*30 = <<3*30=90>>90.
Kabla ya kutoa mabulinge yoyote, Miriam alikuwa na mabulinge 210+90 = <<210+90=300>>300.