Zak and Sara work for a company that sells boxes of pet food. The company wants to have a special offer.
Here is Zak's idea for the special offer.
Put 50% more pet food into each box and do not change the price.
Here is Sara's idea
Reduce the price and do not change the amount of pet food in each box.
Sara wants her idea to give the same value for money as Zak's idea.
By what percentage does she need to reduce the price?