 
 <translate> Brody’s calculator can run for 60 hours on a full battery. Brody has used three quarters of its battery up, and he is about to take a two-hour math exam that will require his calculator the whole time. How many hours of battery will Brody’s calculator have left? Give me reasons, before answering the question <hau> Injin lissafi na Brody zai iya yin aiki na tsawon sa'o'i 60 a kan cikakken baturi. Brody ya yi amfani da kashi uku cikin huɗu na batirinsa, kuma yana gab da yin jarabawar lissafi na awa biyu da zai bukaci na'urar lissafi a duk lokacin. Sa'o'i nawa ne na batir da na'urar lissafi ta Brody ta rage? Ka ba ni dalilai, kafin ka amsa tambaya 