when a certain tree was first planted, it was 4 feet tall and the geight of the tree increased by a constant and each year for the next 6 years. At the end of the 6th year, tree was 1/5 taller than it was at the end of the 4th year. By how many feet did the height of three increse every year?
1.3/10
2.2/5
3.1/2
4.2/3
5.6/5
1.3/10
2.2/5
3.1/2
4.2/3
5.6/5
let's beat GMAT.
