Question
A lorry and a Mercedes started travelling from Town R to Town S at the same time. After 3 hours, the Mercedes reached Town S while the lorry covered only 710 of the journey. The speed of the Mercedes was 30 km/h more than the speed of the lorry. Find the speed of the lorry.
3 m

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A lorry and a Mercedes started travelling from Town R to Town S at the same time. After 3 hours, the Mercedes reached Town S while the lorry covered only 710 of the journey. The speed of the Mercedes was 30 km/h more than the speed of the lorry. Find the speed of the lorry.