Update time_helper.rb to fix output for exact minutes.

app/helpers/time_helper.rb

@@ -5,9 +5,13 @@ module TimeHelper
     seconds = interval_in_seconds - minutes * 60
     if minutes >= 1
-      "#{pluralize(minutes, "minute")} #{pluralize(seconds, "second")}"
+      if seconds % 60 == 0
+        pluralize(minutes, "minute")
+      else
+        [pluralize(minutes, "minute"), pluralize(seconds, "second")].to_sentence
+      end
     else
-      "#{pluralize(seconds, "second")}"
+      pluralize(seconds, "second")
     end
   end

spec/helpers/time_helper_spec.rb

@@ -4,10 +4,12 @@ describe TimeHelper do
   describe "#time_interval_in_words" do
     it "returns minutes and seconds" do
       intervals_in_words = {
-        100 => "1 minute 40 seconds",
-        100.32 => "1 minute 40 seconds",
-        121 => "2 minutes 1 second",
-        3721 => "62 minutes 1 second",
+        60 => "1 minute",
+        100 => "1 minute and 40 seconds",
+        100.32 => "1 minute and 40 seconds",
+        120 => "2 minutes",
+        121 => "2 minutes and 1 second",
+        3721 => "62 minutes and 1 second",
         0 => "0 seconds"
       }