exam Maths Puzzle Numerical Ability

Please help me find the measures of the sides of the triangle: The ratio of the measures of three sides of a triangle are 1/2:1/3:1/5, and its perimeter is 6.2 centimeters.

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exam Other Question

Rational Expression:

x^2 - 4/x divided by 4x - 8/x Hi. I have taken a certification test this past weekend and want to know if I got the answer to the problem below correct or not. Thanks!

(3+1)
______
(6+4)^2