Brandon and Shanda walk to grandma's house at a rate of 4 mph.they ride their bicycles back home at a rate of 8 mph over the same route that they walked .it takes one hour longer to walk than ride .how long did it take them to walk to Grandma's?
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Brandon and Shanda walk to grandma's house at a rate of 4 mph.they ride their bicycles back home at a rate of 8 mph over the same route that they walked .it takes one hour longer to walk than ride .how long did it take them to walk to Grandma's?
Let t be the time for walklng and s be the distance.
Then 4t = 8(t-1) ; 4t = 8t -8; t = 2 hours; Therefore,s = 4t = 8 miles
ANS: assume x hours for walking then x-1 hours for riding x*4= 8*(x-1) x= 2
翻译:
布兰登和盛大走到祖母家的速度在每小时4英里的速度。他们骑自行车回家的速度在每小时8英里,他们走相同的路线。它需要一个小时,再走路比骑。他们花了多少时间去奶奶家?
Let "t" be the time for walklng and "s" be the distance.
Then 4t = 8(t-1) ;
4t = 8t -8;
t = ...
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翻译:
布兰登和盛大走到祖母家的速度在每小时4英里的速度。他们骑自行车回家的速度在每小时8英里,他们走相同的路线。它需要一个小时,再走路比骑。他们花了多少时间去奶奶家?
Let "t" be the time for walklng and "s" be the distance.
Then 4t = 8(t-1) ;
4t = 8t -8;
t = 2 hours;
Therefore, s = 4t = 8 miles
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