title: round decimal to nearest 10th
body: <p>need to round my answer to nearest10th.</p>
  
  <pre><code>    double finalPrice = everyMile + 2.8;
      DecimalFormat fmt = new DecimalFormat("0.00");
      this.answerField.setText("£" + fmt.format(finalPrice) + " Approx");
  </code></pre>
  
  <p>the above code rounds a whole number to the nearest 10th however it wont round a decimal. e.g 2.44 should be rounded to 2.40</p>