 
 <translate> The battery charge in Mary’s cordless vacuum cleaner lasts ten minutes. It takes her four minutes to vacuum each room in her house. Mary has three bedrooms, a kitchen, and a living room. How many times does Mary need to charge her vacuum cleaner to vacuum her whole house? Let's be accurate as possible. <ibo> Batrị dị n'ihe e ji asa ákwà na-adịru nkeji iri. Ọ na-ewe ya minit anọ iji kpochapụ ọnụ ụlọ nile dị n'ụlọ ya. Mary nwere ọnụ ụlọ ihi ụra atọ, kichin, na ebe obibi. Ugboro ole ka Meri ga-eji gbajuo ọkpọka ájá ya iji kpochapụ ụlọ ya dum? Ka anyị mee ka nke a doo anya. 