Please simplify answers - need to understand why and how fractions

are used.  Thank you for the help.
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2 Answers

=

51 is 5% of what number?

x * 5% = 51

x * .05 = 51

x = 51/.05

x= 1020

check

1020 * 5% = 51

 

by Level 6 User (19.3k points)
7 is 75% of what number
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