How do you solve #.06a = 1.2#?

2 Answers
Mar 26, 2016

Answer:

#a=20#

Explanation:

Divide both sides by 0.06.

#a = 1.2/0.06#

#= 20#

Mar 26, 2016

Answer:

#a=20#

Explanation:

To do this without a calculator, write #0.06=6/100=3/50#.

Then, we have

#3/50a=1.2#

We can also write #1.2=1+2/10=1+1/5=6/5#.

#3/50a=6/5#

Multiply both sides by #50/3# to isolate #a#.

#a=6/5xx50/3#

We can rearrange this, since multiplication and division are commutative:

#a=6/3xx50/5#

#a=2xx10=20#