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Party A and Party B travel at the same time. Party A rides 15 kilometers per hour, Party B walks 5 kilometers per hour, and Party A returns 120 kilometers. When meeting Party B, how many kilometers does Party A and Party B travel You can't use the equation. It's urgent
Time = 240 / (15 + 5) = 12
Line a = 15 * 12 = 180
Line B = 5 * 12 = 60
They set out at the same time from places a and B, which are 120 kilometers away. A rides 18 kilometers per hour and B walks. After five hours, they meet,
Equivalent relation writing
The first method: 120 / 5-18 = 24-18 = 6 km
The second method: (120-18 * 5) / 5
=(120-90)/5
=30/5
=6 km
A: B's speed is 6 km
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