Problem5 (MultiSource)
Tab 1: True Speed (in miles per hour) 
Tab 2: Specific Aviation Turbine Fuel Consumption (seatmiles per US gallons) 
Tab 3: Tank Capacity (in US gallons) 
Tab 4: Seating Capacity (in number of seats) 





 Which plane is best suited for long distance travel, and which planes are best suited for short distance economy flight?
Best suited for long distance travel  Best suited for short distance economy flight  Plane model 
A19A  
B47A  
C37B  
D49P  
E89G 
 The Seatmiles is improved in the D49A version over C37B by percentage.
Solution5 (MultiSource)
 The formula for distance is
Plane Model

Specific Aviation Turbine Fuel Consumption (US gallons per seatmile) x Tank Capacity gives Seatmiles
Seatmiles divided by number of Seats gives Distance.

A19A

7.32 Seatmiles per US gallon x 200 US gallons divided by 38 Seats = 38.5 miles

B47A

3.89 Seatmiles per US gallon x 300 US gallons divided by 48 Seats = 24.31 miles

C37B

24.89 Seatmiles per US gallon x 120 US gallons divided 120 Seats = 24.89 miles

D49P

49.9 Seatmiles per US gallon x 158 US gallons divided by 198 Seats = 39.8 miles

E89G

32.9 Seatmiles per US gallon x 258 US gallons divided by 122 Seats = 69 miles

The numbers 24.31 and 24.89 are close to each other, so the calculation has to be done to include more digits. But 69 is far from any other numbers listed, so 69 is a good enough approximation. Similarly we need to round 38.5 and 39.8 to one decimal digit.
Most suited for long distance travel  Most suited for short distance economy flight  Plane Model 
A19A  
B47A  
C37B  
D49P  
E89G 
 Seatmiles = Seatmiles per volume x volume =
Plane Model 
Specific Aviation Turbine Fuel Consumption (US gallons per seatmile) x Tank capacity gives seatmiles x SeatMiles into number of seats gives the distance. 
C37B 
24.8 Seatmiles per US gallon x 120 US gallons = 2976 Seatmiles 
D49P 
49.9 Seatmiles per US gallon x 158 US gallons = 7884.2 Seatmiles 
The required percentage is
Choose the answer appropriately.
Also, notice that the tables in the tabs can be joined (protocol) into a single table like below with the plane model as the link.
Plane Model 
Performance (in miles per hour) 
Performance (seatmile per US gallon) 
Size (in US gallons) 
Size (in seats) 
A19A 
345.5 
7.32 
200 
38 
B47A 
234.3 
3.89 
300 
48 
C37B 
115.3 
24.8 
120 
120 
D49P 
322.8 
49.9 
158 
198 
E89G 
655.3 
32.9 
258 
122 
Hence, this problem reduces to a single table problem. The GMAT can split an existing model and ask you to integrate the submodels into a super model again.