One tricky fact about percentages is that they are usually performed over the last computed quantity. It makes them non-additive. For example, a raise of 10% followed by a 10% some time later, is NOT a 20% of total raise
The question states Ashely is making $500 a week at her job and that she receives a 20% pay raise. After that raise she will make
A year later she takes a 5% pay cut. We must be careful to take that percentage from the last earnings. She now makes
4cm•2=8cm which is the length of the red paper so therefore Red paper= 4cmx8cm. Then your going to take 3cm-4cm= 1cm Next your going to solve for 7cm-8cm=1cm Which leaves you with an answer of 1cmx1cm more of visible red paper.