exam Maths Puzzle Numerical Ability

a rectangular lawn has an area of 667 square meters. Surrounding the lawn is a flower border 4 meters wide. The border alone has an area of 548 square meters.

A circular sp

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Parabola: focus at (-3,0); directix the line x=3 Joseph has 4 times as many quarters as he does dimes. If he has a total of $2.65, how many of each type of coin does he have?