40% of 75 is what number?

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Answer 1 · 2017-01-31T05:10:22

#30#

#40%# is the same as #40/100#, so taking the percent amount as #x# we write:

#x=75xx40/100#

Dividing the numerator and the denominator by #25#, we get:

#x=3cancel75xx40/(4cancel100)#

#x=3xx40/4#

Dividing the numerator and the denominator by #4#, we get:

#x=3xx(10cancel40)/(1cancel4)#

#x=3xx10#

#x=30#