book Maths Puzzle Numerical Ability

Each person must finish a 110-item test in 90 minutes. How much time(in seconds) should be spent in each test item to be able to complete the test in the time allotted?

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book Other Question

How would you write an equation of a graph that models the situations?
a) the path of a satellite in orbit at a distance of 19 000km from the centre of earth.
b)the path of a poi Is 14/25 greater or less than 0.6?

Thanks,
Lyn