When a certain tree was first planted, it was 4 feet tall, and height of he tree increased by a constant amount each year for the next 6 yrs. At the end of 6th year, the tree was (1/5) taller than it was at the end of the 4th yr. By how many feet did the height of the tree increase each year?
a) (3/10)
b) (2/5)
c) (1/2)
d) (2/3)
e) (6/5).
a) (3/10)
b) (2/5)
c) (1/2)
d) (2/3)
e) (6/5).
