Simon makes 30 cakes. He gives 1/5 of the cakes to Sali.
He gives 10% of the 30 cakes to Jane.
What fraction of the 30 cakes does he have left?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year? show your work and explain your reasoning in the space provided below.

Carl is boarding a plane. he has 22 checked bags of equal weight and a backpack that weighs 4 \text{ kg}4 kg. the total weight of carl's baggage is 35 \text{ kg}35 kg.