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Boat fuel use rate

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by AbeNeedsAnswers » Sun Jul 02, 2017 11:16 am
Experts

The explanation in the OG seems a bit complex. Is there an easier way to solve this?

When traveling at a constant speed of 32 miles per hour, a certain motorboat consumes 24 gallons of fuel per hour. What is the fuel consumption of this boat at this speed measured in miles traveled per gallon of fuel?

A) 2/3
B) 3/4
C) 4/5
D) 4/3
E) 3/2

D
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by Brent@GMATPrepNow » Sun Jul 02, 2017 11:24 am
AbeNeedsAnswers wrote:Experts

The explanation in the OG seems a bit complex. Is there an easier way to solve this?

When traveling at a constant speed of 32 miles per hour, a certain motorboat consumes 24 gallons of fuel per hour. What is the fuel consumption of this boat at this speed measured in miles traveled per gallon of fuel?

A) 2/3
B) 3/4
C) 4/5
D) 4/3
E) 3/2

D
Let's see what happens after ONE HOUR of traveling.

In ONE hour, the boat will travel 32 miles and will use 24 gallons of fuel
So, the fuel consumption rate is 32 miles per 24 gallons
Or we can write: fuel consumption rate = 32/24 miles/gallon
32/24 = 4/3
So, the fuel consumption rate = 4/3 miles per gallon

So, 24 gallons lets motorboat travel 32 miles
So, miles traveled per gallon of fuel = 32/24 = 4/3

Answer: D
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by Jay@ManhattanReview » Wed Jul 05, 2017 12:04 am
AbeNeedsAnswers wrote:Experts

The explanation in the OG seems a bit complex. Is there an easier way to solve this?

When traveling at a constant speed of 32 miles per hour, a certain motorboat consumes 24 gallons of fuel per hour. What is the fuel consumption of this boat at this speed measured in miles traveled per gallon of fuel?

A) 2/3
B) 3/4
C) 4/5
D) 4/3
E) 3/2

D
So you need a faster approach. :)

Given:

1. Speed = 32 miles per hour
2. Rate of consumption of fuel = 24 gallons of fuel per hour

To find out:

Speed in miles per gallon

We see that in the above expression, 'miles' is in the numerator, while 'gallon' is in the denominator.

If we divide 'Speed' given in miles per hour by 'Rate of consumption of fuel', 'hour' gets canceled and we are left with 'miles per gallon, and this is what we want.'

Thus, speed in miles per gallon = [32 miles/hour] ÷ [24 gallons/hour]

=> (32/24)*(miles/hour)*(hour/gallons)

=> 4/3 miles/gallons; 'hour' canceled.

The correct answer: A

Hope this helps!

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by Matt@VeritasPrep » Wed Jul 05, 2017 12:38 am
We want miles/gallons. We're told that miles = 32 and gallons = 24, so miles/gallons = 32/24 = 4/3.
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by Jeff@TargetTestPrep » Thu Dec 07, 2017 5:05 pm
AbeNeedsAnswers wrote:Experts

The explanation in the OG seems a bit complex. Is there an easier way to solve this?

When traveling at a constant speed of 32 miles per hour, a certain motorboat consumes 24 gallons of fuel per hour. What is the fuel consumption of this boat at this speed measured in miles traveled per gallon of fuel?

A) 2/3
B) 3/4
C) 4/5
D) 4/3
E) 3/2
We are given that a motorboat has a rate of 24 gallons per hour while traveling at a speed of 32 miles per hour. We must determine the boat's fuel consumption measured in miles traveled per gallon of fuel.

Since the motorboat consumes 24 gallons when traveling 32 miles, the rate is 32/24 = 4/3.

Answer: D

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by [email protected] » Tue Feb 20, 2018 6:44 pm
Hi All,

We're told that when traveling at a constant speed of 32 miles per HOUR, a certain motorboat consumes 24 gallons of fuel per HOUR. We're asked for the fuel consumption of this boat at this speed measured in miles traveled per gallon of fuel.

Sometimes the big 'step' you have to take with a given question is to reorganize the given information. Here, the question tells us:

Every hour, the boat travels 32 miles and consumes 24 gallons of gas. Since we're asked for miles traveled per gallon, it's easy to see that there are MORE miles traveled than gallons used, so the correct answer must be GREATER than 1. Eliminate Answers A, B and C. The ultimate math 'step' is really just to reduce the fraction 32/24... = 4/3

Final Answer: D

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by deloitte247 » Fri Mar 09, 2018 12:12 pm
At 32 minutes in an hour, the boat consumes 24 gal per hour. This means that during tone hour interval, the boat travels 32 miles expending 24 gallons.
In miles/gallon, the boat travels 32 miles per 24 gallons of fuel
or
32/24 miles per 1 gallon of fuel
=4/3 miles per gallon of fuel

The correct answer is D
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