What is 3.5% of 90?

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Answer 1 · 2016-04-10T18:55:02

#3.15#

There are two ways to solve this problem. You can either express #3.5%# as a decimal or fraction.

Method 1
#1#. Start by expressing #3.5%# as a decimal.

#3.5%#

#=3.5/100#

#=0.035#

#2#. Multiply #90# by #0.035#.

#90xx0.035#

#=color(green)(|bar(ul(color(white)(a/a)3.15color(white)(a/a)|)))#

Method 2
#1#. Start by expressing #3.5%# as a fraction.

#3.5%#

#=3.5/100#

#=35/1000#

#=7/200#

#2#. Multiply #90# by #7/200#.

#90xx7/200#

Since #90# and #200# can be divided by a common factor of #10#, their values are reduced.

#=90color(red)(-:10)xx7/(200color(red)(-:10))#

#=9xx7/20#

#=63/20#

#=color(green)(|bar(ul(color(white)(a/a)3.15color(white)(a/a)|)))#