Question

Sterling plants a tree that is 4 3/4 feet tall.One year later,the tree is 5 2/5 feet tall.How many feet did the tree grow?

Answer 1

5 2/5 - 4 3/4
= 27/5 − 19/4

= ((27 × 4) − (19 × 5)) / (5 × 4)

= (108 - 95) / 20

= 13/20

= 13/20

Answer 2

The tree grew 0.65 feet.

Explanation:

We have,

Height of tree when planted =
`4(3)/(4)` =
`(19)/(4)`

Height of tree one year later =
`5(2)/(5)` =
`(27)/(5)`

So, we get that the difference in the height of the tree in a year is,

Difference =
`(27)/(5)-(19)/(4)`

i.e. Difference =
`(27* 4-19* 5)/(20)`

i.e. Difference =
`(108-95)/(20)`

i.e. Difference =
`(13)/(20)` = 0.65 feet

Hence, the tree grew 0.65 feet.