book Maths Puzzle Numerical Ability

I have one problem that i was really stumped on and hoped you could help me with. If you can will you show me how step by step please:

1. Danielle is nine more than one-fifth of

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book Other Question

could you explain the steps on how to do it? for example A=20 C=29 9.2% is equal to one of how many? 11, since 11 x 9 = 99?