pamriedel pamriedel

23-01-2018
Mathematics

contestada

if 22.5% is 18 how do I found out what 37.5% is

Respuesta :

23-01-2018

you can use proportions.

22.5/100 = 18/x
cross multiply:
100 x 18 = 1800
1800/22.5 = 80

so now you know 80 is the 100%.
then do:

37.5/100 = x/80
cross multiply:
37.5 x 80 = 3000
3000/100 = 30

37.5% = 30

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