Answer:
B
Step-by-step explanation:
Because it says 8 less which is 8- and the product 12 of and any other number can be substituted with x however when there's a number multiplied by a letter the multiplication sign is left out so it is 12x which equals 8-12x
Time taken to drive 140 miles = 2 hours and 45 minutes
= (2 * 60 ) + 45 minutes
= 120 +45 minutes
= 165 minutes
So 165 minutes is required to drive a distance = 140 miles
Then
In 60 minutes the distance that driven = (140/165) * 60 miles
= 8400/165 miles
= 50.909 miles
= 50.91 miles
So the unit rate is 50.91 miles per hour. I hope the procedure is clear enough for you to understand.
-3.768467990 , 3.018467990 <--- Answer, disregard the negative.
Distance = rate times time, and so
time = distance / rate
Here, time = (6.97 miles) / (1.7 mph) = 4.1 hours
