Level 3
Some sticks are placed an equal distance from one another on a table. The distance between the 1st and the 10th stick is 27 cm. The distance between the 5th and the last stick is 30 cm. How many sticks are there altogether?
Level 3
Some cupcakes are displayed an equal distance from one another on a table. The distance between the 3rd and the 9th cupcakes is 36 cm. The distance between the 5th and the last cupcake is 48 cm. How many cupcakes are there altogether?