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

### Instruction:
Thomas, Toby, and Rebecca worked a total of 157 hours in one week.  Thomas worked x hours.  Toby worked 10 hours less than twice what Thomas worked, and Rebecca worked 8 hours less than Toby.  How many hours did Rebecca work?

### Response:
 Toby: 2x-10
Rebecca: ((2x-10)-8) = 2x-18
Jumla: x+2x-10+2x-18 = 157
5x-28 = 157
5x = 185
x = <<37=37>>37 masaa
Rebecca: 2(37)-18 = 56 masaa