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

### Instruction:
Last night, Olive charged her phone for 10 hours. Assuming each hour of charge lasts the phone 2 hours of use, calculate the total time Olive would be able to use her phone before it goes off if she charges it for 3/5 of the time she charged the phone last night.

### Response:
 Ikiwa Olive alishtua simu yake kwa 3/5 ya muda aliyouchaji simu jana usiku, simu itakuwa imeshtuliwa kwa masaa 3/5*10=<<3/5*10=6>>6.
Kwa kudhani kila saa ya kuchaji inadumu simu kwa masaa 2 ya matumizi, simu itadumu kwa masaa 6*2=<<6*2=12>>12 kabla haiwazimike Olive akiitumia baada ya kuishtua kwa masaa sita.