Question
A bus and a Mercedes started travelling from Town Z to Town A at the same time. After 6 hours, the Mercedes reached Town A while the bus covered only 57 of the journey. The speed of the bus was 20 km/h less than the speed of the Mercedes. Find the speed of the Mercedes.
3 m

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A bus and a Mercedes started travelling from Town Z to Town A at the same time. After 6 hours, the Mercedes reached Town A while the bus covered only 57 of the journey. The speed of the bus was 20 km/h less than the speed of the Mercedes. Find the speed of the Mercedes.