Best Answer

512

20% off of 640

= 20% discount applied to 640

= 640 - (20% * 640)

= 640 - (0.20 * 640)

= 640 - 128

= 512

More answers

20 percent off 6.40 = 5.12= 6.40 - (20% * 6.40)

= 6.40 - (0.20 * 6.40)

= 6.40 - 1.28

= 5.12

Q: What is 20 percent off of 640?

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Deducting 20% off 800 would be 800-160 which is 640

20% of 640 = 640*20/100 = 128

800-160=640 !

128 is what percent of 640:= 128 / 640= 0.2Converting decimal to a percentage:0.2 * 100 = 20%

30% off of 640 = 640 - (0.30 x 640) = 448

640

800 - (20%) = 640

640 million

128 / 640 = 0.2Converting decimal to a percentage: 0.2 * 100 = 20%

20%. To get to this answer I used the cross multiplication property.

23 percent of 640 is 147.2

If 1% of 640 is 6.4, than 55% of 640 is 352.