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Therefore, \( w = 9 \).
The length is \( 4 \times 9 = 36 \).
The area is \( 9 \times 36 = 324 \) square meters.
Let the numbers be \( x \), \( x+2 \), and \( x+4 \).
Their sum is \( x + (x+2) + (x+4) = 54 \).
This simplifies to \( 3x + 6 = 54 \).
Subtract 6 from both sides: \( 3x = 48 \).
Divide by 3: \( x = 16 \).
The largest number is \( x + 4 = 20 \).
A train travels 150 miles at a speed of 50 mph and then another 200 miles at 80 mph. What is the average speed of the train for the entire journey?