Positive number z

Positive number z is 10% greater than the number y. How many % is y smaller than z? Report the result rounded to one decimal place.

Correct answer:

p =  9.1 %

Step-by-step explanation:

z=1.1y  p=(zy)/z100=100(1y/z)=100(1y/z)=100(11/1.1)

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