 
 <translate> 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.
The answer is 12 <hau> A daren jiya, Olive ta caji wayarta na tsawon sa'o'i 10. Ganin cewa kowane sa'a daya da aka caji wayar tana daukar sa'o'i 2 ana amfani da ita, lissafa jimillar lokacin da Olive zata iya amfani da wayarta kafin ta kashe idan ta caji ta na 3/5 na lokacin da ta caji wayar a daren jiya. Amsar ita ce 12 