mr lee drove from city p to city q which are 600 km apart. during his return journey his average speed was increased by 7 km/h and the time taken was 15 minutes less. if he drove at an average speed was increased of x km/h on his journey from city p to q formulate an equation in x and show that it reduces x²+7x- 16800=0
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I am not understanding the question sorry bro
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