问一道英语奥数题Lily wants to walk from A to B,there are two roads i
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问一道英语奥数题
Lily wants to walk from A to B,there are two roads in front of her.If a is 10km,b is 6 miles.She walked from A to B on road a at a speed of 20m every minute,and come back on road b.How long did she spend together?
回答写中文
Lily wants to walk from A to B,there are two roads in front of her.If a is 10km,b is 6 miles.She walked from A to B on road a at a speed of 20m every minute,and come back on road b.How long did she spend together?
回答写中文
![问一道英语奥数题Lily wants to walk from A to B,there are two roads i](/uploads/image/z/1071529-25-9.jpg?t=%E9%97%AE%E4%B8%80%E9%81%93%E8%8B%B1%E8%AF%AD%E5%A5%A5%E6%95%B0%E9%A2%98Lily+wants+to+walk+from+A+to+B%2Cthere+are+two+roads+i)
6英里=3公里 = 3000米 10000米10公里)
lily会走路总距离(3000+10000)m = 13000m
她会走路的速度在2000 米/分钟
所以她就花= 13000/20 = 650分
lily会走路总距离(3000+10000)m = 13000m
她会走路的速度在2000 米/分钟
所以她就花= 13000/20 = 650分
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