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Updated on: 02 Oct 2023, 11:39
Originally posted by Sajjad1994 on 03 Mar 2021, 07:30.
Last edited by BottomJee on 02 Oct 2023, 11:39, edited 2 times in total.
Last edited by BottomJee on 02 Oct 2023, 11:39, edited 2 times in total.
Moved to new forum
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Time traveled
at 40 mph: \(\frac{L}{40}\) Time traveled
at 60 mph: \(\frac{L}{75}\)
at 40 mph: \(\frac{L}{40}\) Time traveled
at 60 mph: \(\frac{L}{75}\)
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
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Question Stats:
74% (02:21) correct
26%
(02:37)
wrong
based on 375
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A certain brand of car has a fuel economy of L miles per gallon of gasoline when driving at 40 miles per hour. When driving at 60 miles per hour, the fuel economy drops to 0.8L miles per gallon.
In the table, select the expression that represents the time traveled on one gallon of gasoline while driving at 40 miles per hour and select the expression that represents the time traveled on one gallon of gasoline while driving at 60 miles per hour.
In the table, select the expression that represents the time traveled on one gallon of gasoline while driving at 40 miles per hour and select the expression that represents the time traveled on one gallon of gasoline while driving at 60 miles per hour.
|
Time traveled at 40 mph |
Time traveled at 60 mph |
|
| \(\frac{L}{40}\) | ||
| \(\frac{L}{60}\) | ||
| \(\frac{L}{66}\) | ||
| \(\frac{L}{72}\) | ||
| \(\frac{L}{75}\) | ||
| \(\frac{L}{93.75}\) |
ShowHide Answer
Official Answer
Time traveled
at 40 mph: \(\frac{L}{40}\) Time traveled
at 60 mph: \(\frac{L}{75}\)
at 40 mph: \(\frac{L}{40}\) Time traveled
at 60 mph: \(\frac{L}{75}\)
19 Nov 2021, 03:28
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1. \(\frac{L}{Gallon}\) when raveling with speed \(\frac{40miles}{hour}\)
2. \(\frac{8L}{10Gallon}\) when raveling with speed \(\frac{60miles}{hour}\)
Question stem: what is "Time" traveled on 1 gallon with speed 40 and 60 miles/hour respectively?
Distance = Rate * Gallon
1. Distance = \(\frac{L}{Gallon}\) * 1 Gallon= L
Time = \(\frac{Distance }{Rate }\) = \(\frac{L}{40}\)
2. Distance = \(\frac{0.8L}{Gallon}\) * 1 Gallon= \(\frac{8L}{10}\)
Time = \(\frac{Distance }{Rate }\) = \(\frac{8L}{10*60}\)=\(\frac{L}{75}\)
2. \(\frac{8L}{10Gallon}\) when raveling with speed \(\frac{60miles}{hour}\)
Question stem: what is "Time" traveled on 1 gallon with speed 40 and 60 miles/hour respectively?
Distance = Rate * Gallon
1. Distance = \(\frac{L}{Gallon}\) * 1 Gallon= L
Time = \(\frac{Distance }{Rate }\) = \(\frac{L}{40}\)
2. Distance = \(\frac{0.8L}{Gallon}\) * 1 Gallon= \(\frac{8L}{10}\)
Time = \(\frac{Distance }{Rate }\) = \(\frac{8L}{10*60}\)=\(\frac{L}{75}\)
General Discussion
03 Mar 2021, 08:37
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In 1 gallon, miles travelled is L
And distance covered is 40 miles in 1 hour,
So L miles is travelled in 1/40*L hour
Similarly ,when travelling at 60 miles per hour,
Hour needed to travel 0.8L is 0.8L/60=L/75
Posted from my mobile device
And distance covered is 40 miles in 1 hour,
So L miles is travelled in 1/40*L hour
Similarly ,when travelling at 60 miles per hour,
Hour needed to travel 0.8L is 0.8L/60=L/75
Posted from my mobile device
