Jade’s new suitcase weighs 3kg. When it is packed, her suitcase must not weight more than 25kg altogether.
What percentage of the 25kg does Jade have left for packing?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning