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### Question

If 20% of X is Y, then Y% of 20 is?

**A**

4 % of X.

**B**

14 % of X.

**C**

34 % of X.

**D**

24 % of X.

**Soln.**

**Ans: a**

We have Y = $(20 × X)/100$, so Y% of 20 is same as $(20 × X)/100$% × 20, which can be rearranged to $(20 × 20)/100$% × X = 4% of X.