conversations.from: human
conversations.value: 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.
  Work out the solution step by step.
conversations.from: assistant
conversations.value: If Olive charges her phone for 3/5 of the time she charged the phone last night, the phone would be charged for 3/5*10=6 hours.
  Assuming each hour of charge lasts the phone 2 hours of use, the phone will last for 6*2=12 hours before it goes off when Olive uses it on a six hours charge.