diff --git a/src/Calculator.php b/src/Calculator.php
deleted file mode 100644
index 143aee2..0000000
--- a/src/Calculator.php
+++ /dev/null
@@ -1,21 +0,0 @@
-<?php
-
-namespace App;
-
-class Calculator
-{
-    public function add($a, $b)
-    {
-        return $a + $b;
-    }
-
-    public function subtract($a, $b)
-    {
-        if($a>99){
-            return $a - $b;
-        }else{
-            return $a - 2*$b;
-        }
-        
-    }
-}