TheMoreneafamilydrovetoYoesmiteNationalparkin3hours24minutes.Onthewayhome,yheyaveraged5milesperhourlessandthetriptook3hours42minutes.HowfarfromYoesmiteNationalParkdotheylive?的Morenea家庭驱车,国家公园Yoes

Question

The Morenea family drove to Yoesmite National park in 3 hours 24 minutes.On the way home,yhey averaged 5 miles per hour less and the trip took 3 hours 42 minutes.How far from Yoesmite National Park do they live?
的Morenea家庭驱车,国家公园Yoesmite在3小时24分钟.在回家的路上,yhey平均每小时5英里的行程花了3小时42分钟.他们住多远从Yoesmite国家公园?
1.Lets talk about a distance formula math problem.
2.The universal formula is Distance = Speed X Time
3.Now look at this problem about the Morena family going to and from the National Park.
4.The key information that we need to solve this problem are:
Distance for going to and returning from the park is really the same.
The time going there is shorter than returning home because the speed is slower.
But what we can use is really the rate of time difference which we know.
The ratio of time difference is found by :3 hours 24 minutes is really = 204 minutes
3 hours 42 minutes is really = 222 minutes
Now,222 minutes divided by 204 minutes is the Ratio of about 1.09 - this number is really important.
5.Now plug what you know into our distance formula:
DISTANCE = SPEED X TIME
DISTANCE = ratio speed X time going to the park
DISTANCE = 1.09 X 204 minutes
6.Now,at this point,you can take it away solving for the DISTANCE.The answer you come up with is really an approximation.Good luck mulitplying decimal values.
1.让我们谈论的距离公式的数学问题.
2.万能公式距离=速度X时间
3.现在看在莫雷纳家族从国家公园和这个问题有关.
4.我们需要解决这个问题的关键信息是：
从公园返回的距离真的是一样的.
去那里的时间较短,因为速度比较慢,比回国.
但是我们可以使用什么是真正的速度的时间差,我们知道.
时间差的比例发现：真的是3小时24分钟= 204分钟
真的是3小时42分钟= 222分钟
现在除以204分钟,222分钟的比率约为1.09 - 这个数字是非常重要的.
5.现在,堵塞你知道什么到我们的距离公式：
距离=速度×时间
距离=比速度X时间去公园
距离= 1.09 X 204分钟
6.现在,在这一点上,你可以把它远离求解的距离.你想出的答案真的是一个近似值.好的运气mulitplying十进制值.

Answer 1

换个思路,题目中的信息并不都是有用的,存在误导甚至错误的东西呢
DISTANCE = 1.09 X 204 minutes 这个明显没有道理的
去公园,3.4小时,速度未知；回家,3.7小时,速度不大于5英里/小时（ 5 miles per hour less 可以这么理解不?）
则,由回家时间及速度知,距离应小于18.5英里
正常情况,往返的行使速度应相差不大,即去公园的速度大致也在5英里/小时左右,即距离17英里左右
取个平均值,大概17.75英里