exam Maths Puzzle Numerical Ability

Increasing x by 19% is equal to decreasing y by 15%. y/x=
x+.19x= y-.15y
1.19x=.85y now what??

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exam Other Question
Subtract. Write your answer in simplest form:

y - 2 y
----- - -------
y + 3 2y + 6

Thank you for helping me! Discuss the symmetry of the function y = - x 5 / (x 2 – 8