book Maths Puzzle Numerical Ability

Yuki, Mollie, Brandon and Anna share an apple pie for desert. Bradon eats half the amount Mollie eats. Yuki eats four times as much pie as Brandon. Mollie eats 1/4 of the pie. How much does Anna eat?

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book Other Question

I am trying to solve a problem relating the volume to the surface area of a sphere. I got this far and cannot finish it. Can you please help me? Thank you.

v=4/3pi*(s/4pi)**3/2 I need to Simplify and express in simplest radical form.

6 square root of 7 * 3 square root of 5
I think I need to get the same number in the square root.
so i would get
3