A dog shelter had 20 puppies last month. This month, 31 puppies are at the shelter!

What is the percent of increase?

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?