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

### Instruction:
Chris has twelve marbles, and Ryan has twenty-eight marbles. If they put marbles together in a pile and then each takes away 1/4 of marbles from the pile, calculate the number of marbles remaining in the pile.

### Response:
 Chris na Ryan wakiweka pamoja mabulinge yao kwenye boma, idadi ya mabulinge kwenye boma ni 12+28 = <<12+28=40>>40.
Ikiwa kila mmoja wao atachukua 1/4 ya mabulinge, kila mtu atapata 1/4*40 = <<1/4*40=10>>10 mabulinge.
Wote wawili wakichukua jumla ya mabulinge 10+10 = <<10+10=20>>20 kutoka kwenye boma.
Idadi ya mabulinge yaliyosalia kwenye boma ni 40-20 = <<40-20=20>>20.