book Maths Puzzle Numerical Ability

Find the average speed for the given distance and time. A train travels 75 miles in 55 minutes.

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book Other Question

Frank can type a report in 2hrs and james takes 5hrs. How long does it take them together? What is the answer to th following question: Solution A is 30% acid and solution B is 70% acid. How much of each should be used to make 100 mL of a solution that is 58% acid?