40% of what is 12?

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Answer 1 · 2016-06-23T19:44:57

40% of 30 is 12

Convert the percentage to a decimal by using division, just divide the percentage #40%# by 100.

#40-:100=0.4#

Divide #12# by #0.4#

#12/0.4=30#

Consider this:

#x# = 40%
#y# = 12
#z# = 30

Divide #x# by 100

Divide #x/100# by #y#

#x/100/y# = #z#

#40/100/12=30#