Question

54 is 75% of

I need to showwork so I need help with find the whole from a precent can u show me how u get the answer

Answer 1

use the IS over OF:IS/OF
next set up a proportion: IS/OF=%/100
since 54 is before IS therefore it is the "IS". And 75 is the % .We don't know what is OF so,we replace it with "X"
it will be something like this:
54/X = 75/100
and then cross multiply,
54(100)=5400
and 75(x)=75x
so 5400=75x
divide each side by 75
5400/75=72
and that's your answer,72.

Answer 2

54 is 75% of x.

75% of x:

`75 \% \ of \ x=75\% * x= (75)/(100)x=(3)/(4)x`

75% of x is (3/4)x and 75% of x is 54. Set (3/4)x equal to 54:

`(3)/(4)x=54 \\ x=54 * (4)/(3) \\ x=(54)/(3) * 4 \\ x=18 * 4 \\ x=72`

54 is 75% of 72.