28-01-2015
Mathematics

contestada

84 is 75% of what number?

Respuesta :

28-01-2015

100% = 1
75% = 0.75 = 3/4

3/4x = 84 | *4
3x = 336 | /3
x = 112

Or you can do like this:
3/4x = 84 | /3

1/4x = 28

3/4x + 1/4x = 84 + 24
4/4x = 112
x = 112

Answer Link

harricat001 harricat001

28-01-2015

112
x * 75/100=84
75x/100=84
75x=8400
x=112

Answer Link

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