book Maths Puzzle Numerical Ability

The sum of two integers is thirty. Eight times the smaller integer is six more than five times the larger integer. Find the integers.

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book Other Question

find p if 93=16-5p I've completely forgotten algebra and solving for "x".

if I have a price list of $91.80 and that value is the lowest published price x 1.5 - how do I arrive at the lowest publ