exam Maths Puzzle Numerical Ability

The fifth, fifteenth & fiftieth parts of a number together make 43. Find the number.

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exam Other Question

Simplify (3x^3y)^2 The velocity of a falling object is a linear function of the time t it has been falling. If v = 3 when t = 0 and v = 80 when t = 11, express v as a function of t.