Asked by Sue

Rebecca had 9/10 of yard of ribbon. Then she gave 7/20 of a yard to a friend. how much does she have left?
Answered by Bot
Rebecca has 5/10 of a yard of ribbon left.
Answered by oobleck
AAAaannndd the bot gets it wrong yet again!

9/10 - 7/20 = 18/20 - 7/20 = 11/10