Answer:
A. 5
Explanation:
let us use the part to whole approach
given the ratio= 2:9
the total ratio= 2+9=11
the total trees planted=27
using the part to whole, the oak trees planted is given as
let the number of oak trees be x
2/11=x/27
cross multiply we have
11x=27x2
11x=54
x=54/11
x= 4.90
approximately 5 tree