Question

A tree grows `1 3/4` feet per year. How long will it take the tree to grow from a height of `21 1/4` feet to a height of 37 feet?

Answer 1

`color(magenta)9` years

Explanation:

`:.37-21 1/4=148/4-85/4=63/4=15 3/4ft`

`:.=15 3/4-:1 3/4`

`;.=63/4-:7/4`

#:.cancel 63^color(magenta)9/cancel 4^color(magenta)1xx cancel 4^color(magenta)1/cancel 7^color(magenta)1#

`:.color(magenta)(=9` years