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

### Instruction:
A magician has a top hat with 20 red marbles and a top hat with 30 blue marbles. If he takes away 3 red marbles and four times as many blue marbles as red marbles (without looking), how many marbles in total does he have left?

### Response:
 Kuna mabulingo meupe 20 - 3 = <<20-3=17>>17 yaliyobaki kwenye kofia ya juu ya kwanza.
Kuna mabulingo meupe 4 * mabulingo meupe 3 = <<4*3=12>>12 yaliyochukuliwa kutoka kwenye kofia ya juu ya pili.
Kuna mabulingo meupe 30 - 12 = <<30-12=18>>18 yaliyobaki kwenye kofia ya juu ya pili.
Jumla ya mabulingo yaliyobaki ni mabulingo meupe 17 + mabulingo meupe 18 = <<17+18=35>>35.