64 is what percent of 80?

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64 is what percent of 80?

A. 80%
B. 70%
C. 60%
D. 64%
Explanation:
Let x percent of 80 be 64.
80 * x/100 = 64 => x = (64 * 100)/80 => x = 80.
80% of 80 is 64.