Answer A motorist makes a journey of 240 km from Singapore to Malacca to visit his in-laws at an average speed Of km/ hr. Write down an expression for the.. number of hours taken for the journey. On his return journey from Malacca to Singapore, his average speed is reduced by 6 km/h due to heavy traffic at the Causeway. Write down an expression for the time taken for the return journey. If the return journey takes 20 minutes longer, form an equation in x and solve it to find the average speed for each journey, giving your answer correct to two decimals places.
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