What percent of 400 is 640?

Answer 1

When you want to calculate a percent, you take the first number divided by the "of number."
For this, it is 400/640=0.625
Then you take the answer and multiple it by 100, moving the decimal to the right 2 digits to get the percent.
0.625*100=62.5%

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Answer 2

400% of 640 = 2,560

Answer 3

160%