First, write down the decimal "over" the number 1 :~$0.65=\dfrac{0.65}{1}$  Then multiply top and bottom by 100 since there are two numbers after the decimal point :~$\dfrac{0.65}{1}=\dfrac{0.65\times100}{1\times100}=\dfrac{65}{100}$  This makes it a correctly formed fraction. Then simplify the fraction (in this case by dividing top and bottom by 5) :~$\dfrac{65}{100}=\dfrac{13}{20}$ 
Convert the decimal $$0.65$$ to a fraction in its simplest form. 
Options:
  $\dfrac{13}{20}$ 
  $\dfrac{3}{4}$ 
  $$\dfrac{17}{20}$$ 
  $$\dfrac{6}{5}$$ 