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

### Instruction:
To get ready for the new school year, Mary brought her two kids shopping. She bought her son James, a coat for $40 and two pairs of jeans. She bought his sister Jamie, a pair of shoes for $30. The total cost of the items was $110. If the two pairs of jeans for James cost the same price, how much did one pair of jeans cost?

### Response:
 Hebu X iwe bei ya suruali moja
Jumla iliyotumika kwa jozi zote za suruali ilikuwa X+X=$110-$40-$30
2X=$110-$40-$30
2X=$40
X=$<<20=20>>20