4. We used 12 gallons of gasoline to travel 400 miles. Find the distance we could travel on 8 gallons. (Total 8 points; 4 points
for the answer, 2 points for the units labeled and 2 points for work shown or explanation)
1 answer:
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Answer:
hours
Step-by-step explanation:
Whenever 2 quantities (suppose a and b) are inversely proportional to each other, we can write an proportionality equation (with k as proportional constant) as:
Since, here t is INVERSELY PROPORTIONAL to r, we can say:
Firstly, we have t = 2 hour and r = 40 mph, so we find k:
Now, secondly, we have r = 45 and k = 80, we need to find t:
So, it would take hours
The answer is B. one solution.