Answer:
So Age of the person is 9.286 years who used 65 trees
Step-by-step explanation:
Given :
Trees used per year = 7 trees / year
Person Used = 65 trees in life
To Find:
Age of person=?
Solution:
We are given with the no of trees used by a person in his lifetime i.e. 65
Now we also see that most american use 7 trees/year
Now
Age of the person = Total trees used / Trees used per year
Putting in the values
we get
Age of the person = 65 / 7
= 9.286 years
So Age of the person is 9.286 years
Step-by-step explanation:
160 miles = 20 gallons
400 miles = x gallons
160 × x = 20 × 400
x = 8, 000/160
x = 50 gallons
8100/6 = 5400/x
cross multiply
8100x = 32400
x = 32400/8100
x = 4......4 years old