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GMAT Club World Cup 2026 (Day 2): A delivery van has a mileage of 14

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topgmat25

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07 Jul 2026, 19:43

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5120 ounces = 40 gallons

Before:
14 miles/gallon * 40 gallons = 560 miles

After:
14 miles per gallon -> 14 miles per 0.7 gallon -> 20 miles per gallon
20 miles/gallon * 40 gallons = 800 miles

800 - 560 = 240 miles

The answer is C

roushanpandey65

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07 Jul 2026, 20:01

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The Answer should be C:

initial milage 14mi/gallon
total tank capacity=5120 ounce that is 5120/128= 40 gallon

initially with old setting truck should move 14*40= 560 miles

with new setup it uses 70% fuel to run the same distance

70% of X= 560
X= 800

difference is 800-560= 240

firefox300

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07 Jul 2026, 20:03

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It uses 70%, the new mileage is 14/0.7 = 20 miles/gallon
5120/128 = 40 gallons

With previous mileage: 14*40 = 560
With new mileage: 20*40 = 800

800-560=240 miles

The correct answer is C

abhilash7771

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07 Jul 2026, 20:06

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1 gallon = 128 ounces
1 tank = 5120 ounces = 40 gallons
Distance before installation = 14 miles/gallon.
total distance = 14 * 40 = 560 miles

After installation
Van uses only 70% as much fuel to travel the same distance
1 gallon = 14 miles(previously)
0.7 gallon = 14 miles(now)
so, 1 gallon = 20 miles (now)

New Total distance = 20 miles* 40 gallons = 800 miles
Extra miles = 800-560 = 240 miles

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07 Jul 2026, 20:08

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Increased mileage is 14/.7 miles per gallon i.e 20miles per gallon. Hence, there is increase of 6 miles per gallon. In 5120 ounce, there are 40 gallons based on conversion given. Hence, there is increase of 40*6 miles i.e 240 miles the van can travel after addition of fuel saving system is installed after full tank.

Aarushi100

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07 Jul 2026, 20:36

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For full tank: 5120 ounces
1 gallon = 128ounces => 40gallons =5120ounces.

Now initially the car travelled: 14 miles in 1 gallon, now it travels 14miles in 0.7 gallons
So initially it travelled 14*40=560 miles on a full tank
Now it travels: 40*14/0.7 = 800 miles
# of miles more= 800-560 =240miles.
ANSWER C

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07 Jul 2026, 21:16

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First I found the tank size in gallons which was 5120 oz / 128 oz in a gallon which gave me 40 gallons.

Then I found the new miles per gallon for the van after the system was installed. Do this I divided the initial 14 miles per gallon rate by .7 to get 20 miles per gallon.

The original range on 40 gallons of gas is 40 gallons *14 mpg which gives 560 miles.

The new range is 40 gallons * 20 mpg which is 800

800-560 = 240 mile difference

metrogloomin

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07 Jul 2026, 21:38

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Before fuel-saving, mileage=14 miles/gallon
After fuel-saving, same distance will consume 70% fuel of what it used to. Therefore, 14 miles would not consume 0.7 gallons.
New mileage=14/0.7 miles/gallon=20 miles/gallon

Mileage change = 20-14 = 6 miles/gallon, i.e. for each gallon - the van runs 6 miles more.

Fuel tank capacity = 5120 ounces = 5120/128 gallons = 40 gallons
Extra distance covered = Fuel tank capacity * Mileage increase = 40*6 = 240 miles

stonkstan

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07 Jul 2026, 21:53

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Tank total capacity = 5120 ounces = 5120 / 128 = 40 Gallons

Using unitary method:

Earlier, van could travel 14 miles in 1 gallon. Thus, it could travel 40*14 (=560) miles in 40 gallons.

Now, it could travel the same 14 miles in 70% fuel (= 1*0.7), or 0.7 gallon. Thus, it can travel (40 / 0.7)*14 (=800) miles in 40 gallons

Additional miles on full tank = 800 - 560 = 240

rungtamehul

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07 Jul 2026, 22:00

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Current mileage: 14 m/gallons
New mileage: 14/0.7 = 20 m/gallons

5120 ounces of fuel = 5120/128 gallons = 40 gallons of fuel

Therefore, previously the car could travel 14*40 miles = 560 miles
After installation of fuel saving system, the car could travel 20*40 miles = 800 miles

Difference in distance = 800-560 miles = 240 miles
Hence C is the correct answer

Bunuel

A delivery van has a mileage of 14 miles per gallon. After a fuel-saving system is installed, the van will use only 70% as much fuel as it used before to travel the same distance. If the van’s fuel tank holds 5,120 ounces of fuel, how many more miles can the van travel on a full tank after the system is installed? (1 gallon = 128 ounces)

A. 168
B. 224
C. 240
D. 560
E. 800

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07 Jul 2026, 22:21

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1. Find out how many gallons the tank holds
The tank holds 5,120 ounces of fuel, and there are 128 ounces in a gallon.

5,120 ÷ 128 = 40 gallons (This is the size of a full tank)

2. Calculate the distance on a full tank BEFORE the system
The van gets 14 miles per gallon.

40 gallons × 14 miles/gallon = 560 miles

3. Calculate the new mileage AFTER the system
The van now uses 70% (or 0.7) as much fuel to travel the same distance. If it used to take 1 gallon to go 14 miles, it now takes 0.7 gallons to go those same 14 miles.
To find the new miles per gallon, divide the miles by the new amount of fuel:

14 miles ÷ 0.7 gallons = 20 miles per gallon

4. Calculate the distance on a full tank AFTER the system

40 gallons × 20 miles/gallon = 800 miles

5. Find the difference
Subtract the old distance from the new distance:

800 miles - 560 miles = 240 miles

ananyakc09

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07 Jul 2026, 22:44

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1 gallon= 128 ounces
x gallon =5120 ounces (cross multiply)
x=5120/128
=40 gallon

Before the system is installed:
14miles=1 gallon
D miles=40 gallons (cross multiply)
D=14*40 =560 miles

After the system is installed :
14 miles =0.7 gallon
d miles=40 gallon
d=(14*40)/0.7=800

Difference : d-D =800-560=240miles extra

ChaoChiKit

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07 Jul 2026, 23:08

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Answer: C

Explanation:
5120 ounces of fuel = 40 gallons of fuel
The delivery van can travel 14*40 = 560 miles before the fuel-saving system is installed.
After the system is installed, the delivery van can travel 560/0.7 = 800 miles.
So the difference is 800-560= 240 miles.

Bunuel

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07 Jul 2026, 23:14

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Bunuel

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Current mileage: van cover 14 miles in 1 G of fuel

After fuel-saving system: van will use 70% of fuel to cover 14 miles so in .7 G = 14 miles => in 1 G van will cover 20 miles.

In 5120 ounces there will be 40 G of fuel as 1G= 128 ounces.
Distances covered before fuel-saving system in 40 G: 40*14 = 560 miles
Distance covered after fuel-saving system in 40 G = 40*20 = 800 miles
difference = 800-560 = 240 miles.

AthaniX

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07 Jul 2026, 23:16

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we have clearly
miles=rate x gallons

5120oz/128=40 gallons.

miles=14x40
and also
miles=newRatex0.7x40

equate by miles

14x40=newRatex0.7x40
newRate=20mpg

old distance=14x40=560
new distance=20x40=800
difference = 240

Answer= C

MistyNova

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07 Jul 2026, 23:32

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30 % of 5120 is 1536 ounces, which is 12 gallons. Since 70% fuel is used , we need to see how much vehicle will go in remaining 30%.
14mile per gallon equals 168miles in 12 gallons.

Bunuel

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07 Jul 2026, 23:35

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Current mileage = 14 miles in 1 gallons

New mileage will use 30% less fuel , we can derive that it will cover 14 miles in 0.7 gallons of fuel
therefore current mileage = 14/0.7 --> 20 miles per gallon

Total fuel capacity = 51280/128 --> 40 gallon

Total miles per new mileage = 40 * 20 = 800 miles
Total miles per old mileage = 40 * 14 = 560 miles
Required Distance = 800-560

Therefore 240 is the answer

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07 Jul 2026, 23:50

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we need two seteps only divide 14/.7 to get 20 , new milage and the second is 5120/128 which we see closely give us 40 as 512 is 4 time 128 then multiply 40*20-40*14=240

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07 Jul 2026, 23:55

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Hello ,
currently in 1 gallon it will travel 14 miles , so after fuel saving system in 1 gallon it will tarvel 14/0.7=20 miles
so for every 1 gallon is will travel extra 6 miles
so for 5120 ounces it will travel extra
5120 *6/128= 240 miles
Hence option C is correct

Jay29

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08 Jul 2026, 00:07

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128 ounces = 1 gallon
5120 ounces = 40 gallon.

previously,
1 gallon - 14 miles
now,

7/10 gallon = 14 miles
1 gallon = 20miles

extra miles / gallon = 6.
extra miles full tank= 6 XOXO 40 = 240 miles.