book Maths Puzzle Numerical Ability

The number 28.6 is what percent of 52?

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book Other Question

Someone please show me how to rationalize the denominator for the following problem

1/sqrt(x)+1 >fyi... +1 is not in the sqrt only x

My options are:
A)Sqrt (x)+1 / x-1
B)Sqrt (x)-1 / x+1
C)Sqrt (x)-1 / x-1
Thanks
one glass contains 10 ounces of orange juice and a second glass contains the same amount of lemon juice. A dipper of the first is ladled into the second and throughly mixed. Then a