exam Maths Puzzle Numerical Ability

Can someone help me with this problem?

How do you write 1/8 as a percent.

Thanks,
Sher

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exam Other Question

A 4% salt solution is mixed with a 16% salt solution. How many milliliters of each solution are needed to obtain 600 millilters of a 10% solution? I need some help on these problems. I have to put them into factored form.

1. x^2+2x+9x+18
2. x^2+4x
3. x^2+2x+48
4. x^2+2x+7x+14
5. x^2+x-12
6. x^2+12x+27

Thank You!!