4:1
4 quarts are equal to 1 gallon (i think i am correct)
Answer:
no they are not equivalent
Step-by-step explanation:
0.4/15 = 0.026
so for every minute they travel 0.026km
0.6/20 = 0.03
so for every minute they travel 0.03km
so they are not the same/equivalent
The answer should be 23. Not sure if you have multiple choices, or have to show the work, but 23 is the answer.
Their speed of separation will be equal to the sum of their speeds because they are in opposite directions.
Speed of separation = 40 + 50 = 90 miles per hour
Time = distance / speed
Time = 405 / 90
Time = 4.5 hours
<span />
I don't quite understand your question. Mind to ask more clearly?