A comparison two quantities with different kinds of units

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

Multiplying fractions by whole number 5 x 1/3=?