Answer: 110
Turn each decimal into a Fraction
12.1 = 12 1/10
0.11 = 11/100
Turn 12 1/10 into an Improper Fraction
Multiply 12×10 and get 120. Now add 1 and get 121.
12 1/10 = 121/10
Do Keep Change Flip:
Keep: 121/10
Change: ÷ into ×
Flip: 11/100 into 100/11
New Problem: 121/10×100/11
Multiply
121/10×100/11=12100/110
Divide
12100÷110=110