Amy baked 24 cookies on Monday. She then baked 45 cookies on Tuesday. What is the percent increase in the amount of cookies she baked on Tuesday compared to Monday?

1 answer

To find the percent increase, we need to first find the difference between the two amounts: 45 cookies - 24 cookies = <<45-24=21>>21 cookies
Then we divide the difference by the original amount and multiply by 100% to express the increase as a percentage: 21 cookies / 24 cookies * 100% = 87.5%. Answer: \boxed{87.5}.