79.9 is 99% of what?

1 Answer
May 11, 2018

Answer:

#"The number is " color(indigo)(= 80 (70/99) " or " 80.7 #

Explanation:

Let x be the number.

#99% " of " x = 79.9#

#(99 / 100) * x = 79.9#

#x = (100/99) * 79.9#

#color(indigo)(x = 7990 / 99 = 80.7 " or " 80 (70/99)#