Hi guys.

I have questions like

they're are n beads in a jar

5 beads picked were black

A sample of 50 beads were taken from the jar.

40 beads were black.

So I do 50 * 40 / 5 = 400 beads in total

I need similar questions made by you guys to help me revise for my maths exam which is in two days.

Can you write questions which are similar then press enter a few times and write the answer, that way I can check if I'm doing it correct.

Any help will be appreciated!

Thanks