An arborist examined trees in an orchard to see if they were infected with a virus. out of 90 trees, 40% had the virus. how many trees were infected with the virus?

36 trees were infected with the virus.

Step-by-step explanation:

Given:

Total number of trees =  90

Percentage of tree that had virus  40%

To find:

Number of tress that were infected by virus = ?

Solution:

Let the number trees that was affected by the virus be X.

then

X = 40% of 90

X =

X =

X= 36

96 39 cause 135 -96=39 im smart (i used a calculater)

2/3=10/15

1/5=3/15

10+3=13/15

2 13/15 is the answer