A papaya tree will grow 2 feet in the first year.  In the second year, it will grow 50% more than the first year.  In the third year, the tree will grow 50% more than in the second year.  In the fourth year, it will grow twice as much as the third year.  In the fifth year, it will grow half as much as the fourth year.  When the tree is 5 years old, how tall is the tree?
How tall will the tree be in the second year? ** In the second year, the tree will grow 2 x 1.5 = <<2*1.5=3>>3 feet.
How tall will the tree be in the third year? ** In the third year, it will grow 3 x 1.5 = <<3*1.5=4.5>>4.5 feet.
How tall will the tree be in the fourth year? ** In the fourth year, it will grow 4.5 x 2 = <<4.5*2=9>>9 feet.
How tall will the tree be in the fifth year? ** In the fifth year, it will grow 9 / 2 = <<9/2=4.5>>4.5 feet.
How tall is the tree when it is 5 years old? ** When the tree is 5 years old, including the first year's growth, it will be this tall 2 + 3 + 4.5 + 9 + 4.5 = <<2+3+4.5+9+4.5=23>>23 feet.
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