### Percentage Unchanged

If the base of a rectangle is increased by 10% and the area is unchanged, by what percentage is the width decreased by ?

### CD Heaven

All CD Heaven stores were given the same number of a popular CD to sell for £24. In their two week sale each store reduces the price of the CD by 25% ... How many CDs did the store sell at each price?

### Trusting the Tabloids

Can you match the cards and figure out whether the tabloid headlines can be trusted?

What would you need to multiply by to do the same job as calculating $10\%$ and then adding it on ?