March 12 on Percentage

I used this as an anchor tasks for Grade 7 students in Westport Public Schools. Percentage change is a common concept in the media.

Spiky saved $200. Curly' savings was 4/5 Spiky's. The next year, Curly saved 20% more. Find how much was Curly savings the next year.

What other fraction and percent can result in Curly having $192 as her savings the next year?

This is what-if problem posing (Brown & Walter - The Art of Problem Posing).