exam Maths Puzzle Numerical Ability

Simplify /8 x^2 y^3 / /4 x^3 y^2.

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exam Other Question

The ratio of Brand "Y" golf balls sold to Brand "X" golf balls sold was 4 to 5. If there were 22 fewer Brand "Y" golf ablls than Brand "X" golf balls, then how many Brand "X" golf balls were sold? I am trying to simplify the following:
(x^2)^5 * x / x^3

I got to this:
x^2.5 / x^3 * x / x^3 = x^10 / x^3 * x / x^3

Now I am stumped.