diff --git a/lib/binary_to_decimal.rb b/lib/binary_to_decimal.rb
index 439e8c6..67f6eed 100644
--- a/lib/binary_to_decimal.rb
+++ b/lib/binary_to_decimal.rb
@@ -1,3 +1,4 @@
+require 'pry'
 # A method named `binary_to_decimal` that receives as input an array of size 8.
 # The array is randomly filled with 0’s and 1’s.
 # The most significant bit is at index 0.
@@ -5,5 +6,14 @@
 # Calculate  and return the decimal value for this binary number using
 # the algorithm you devised in class.
 def binary_to_decimal(binary_array)
-  raise NotImplementedError
+  # raise NotImplementedError
+    i = 7
+    count = 0
+    decimal = 0
+    until i < 0
+        decimal += (binary_array[i] * (2 ** count))
+        i -= 1
+        count += 1
+    end
+    return decimal
 end