Which is bigger, 60% of 90 or 1⁄2 of 100?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?

Andres wants to share 1/2 of his birthday cake with his friends. if he has 8 friends, how much of the cake will each friend recieve? draw a model to support your work (its ok if you cant)