exam Maths Puzzle Numerical Ability

postulates: If b, then a
If Z, then b
If y, then z
If X, then b

a. given: x
prove: a

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exam Other Question

An art dealer sold two artworks for $1520 thereby making a profit of 25% on the first work and 10% profit on the other, whereas if he had approached any exhibition he would have s If the total bill at a restaurant, including a 15% tip, is
$65.32, what was the cost of the meal alone?
how do i go about solving this HELP