book Maths Puzzle Numerical Ability

A phone company charges $1.00 for the first three minutes of a long-distance call and $0.30 each for additional minute. A 4% federal tax is then added to the coast of the call. Find the total cost of a 23 minute call.

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book Other Question

How do you compute the intercepts of a quadratic function? Set of all grains of sand in the world.{Infinite Set/Finit% Set}