What is 12 divided by 0.15?

2 Answers
Jun 7, 2016

Answer:

#12# divided by #0.15# is #color(green)(80)#

Explanation:

#12/0.15#
#color(white)("XXX")=1200/15#

#color(white)("XXX")=400/5#

#color(white)("XXX")=80#

Jun 7, 2016

Answer:

It is 80.

Explanation:

You can simply solve this using a calculator, but we are on Socratic, so we have to do something more fun!

The only good idea I had is to write #0.15# as #15/100#.
Then you are asking how to do

#12/(15/100)=(12*100)/15#.

Now we can simplify the common factors writing #12=3*2*2#, #100=2*2*5*5# and #15=3*5#.

#(12*100)/15=(3*2*2*2*2*5*5)/(3*5)=2*2*2*2*5#

and, because I am very lazy, I know only how to do multiplications for 2 and for 10, so I write it as

#2*2*2*10=8*10=80#.