This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

ScanSolve AI Answer
Answer
20
Step 1: Locate the range "120-139" on the x-axis (Number of passengers).
Step 2: Find the bar corresponding to this range.
Step 3: Read the height of this bar on the y-axis (Number of trains). The top of the bar aligns with the value 20 on the y-axis.
Therefore, 20 trains had between 120 and 139 passengers.
The number of trains is .
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Locate the range "120-139" on the x-axis (Number of passengers). Step 2: Find the bar corresponding to this range.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.