There is a 3 hour difference in travel time.
So if x is the speed of the freight train and distance is 240 miles...
3(3x)-3x=240
9x-3x=240
6x=240
x=240/6
x= 40mph for the freight train..
passenger train is 3 times faster than the freight..
3×40=120mph
5x+10y=90
5 miles times each time she hiked x
plus 10 times each time she hiked y
equals 90 total miles
Answer:
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Step-by-step explanation:
Answer: The probability that you select a women who passes is 1/2.
First, let's look at the men. 21 of the 84 test takers were men. If the ratio is 5:2 for failing. Then, 15 failed and 6 passes.
Second, let's look at the women. 63 of the test takers were women. If double the number passed, then 42 passed and 21 failed.
The chances that a random person was a women who passes is 42 out of 84 or 1/2.