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

### Instruction:
Bob and Jim decide to skip rocks.  Bob can skip a rock 12 times.  Jim can skip a rock 15 times.  If they each skipped 10 rocks how many total skips did they get?

### Response:
 Bob aliruka mara 12*10=<<12*10=120>>120
Jim aliruka mara 15*10=<<15*10=150>>150
Hivyo jumla ya mara waliruka ni 120+150=<<120+150=270>>270