Aaron and his mother planted 27 trees on Wednesday. The ratio of oak trees they planted to the total number of
trees they planted was 2:9. How many oak trees did Aaron
and his mother plant on Wednesday?
A)5
B)13
C) 6
D) 21

Step-by-step 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