Approximate Average to 1 decimal place

Hello Experts!

I'm currently using this function to get Total and Average scores.
class Student
{
  public $Name;
  public $Subjects = array();

  // Functions to get Total and Average marks
  public function getTotalMarks()
  {
    $total = 0;
    foreach($this->Subjects as $subject => $marks)
    {
      $total += $marks;
    }
    return $total;
  } 

  public function getAverageMarks()
  {
    if(!count($this->Subjects)) { return 0; }
    return $this->getTotalMarks() / count($this->Subjects);
  } 
}

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How can I make the average a 1 decimal place? I'm getting something like  51.666666666667.

Thank you.
Opeyemi AbdulRasheedAsked:
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pcelbaCommented:
Try this:
class Student
{
  public $Name;
  public $Subjects = array();

  // Functions to get Total and Average marks
  public function getTotalMarks()
  {
    $total = 0;
    foreach($this->Subjects as $subject => $marks)
    {
      $total += $marks;
    }
    return $total;
  } 

  public function getAverageMarks()
  {
    if(!count($this->Subjects)) { return 0; }
    return round($this->getTotalMarks() / count($this->Subjects), 1);
  } 
}

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Opeyemi AbdulRasheedAuthor Commented:
Thank you
0
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