According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.
A- The distance that represents 11 billion years is 244.4 meters.
B- Written human history begins 0.2 milimeters far from the end of the timeline.
A- We can solve this problem by using crossed multiplication.
4,5 billion years --- 100 meters
11 billion years --- X
11 x 100 / 4,5 = X
B- Once again, this can be solved using crossed multiplication.
If 4,500,000,000 years are represented in 100 meters, that would be:
4,500,000,000 --- 100 meters
10,000 --- X
10,000 x 100 / 4,500,000,000 = X
X= 0.0002 meters
0.0002 meters are 0.2 milimeters
Okay so for this what equation do you know for this.
If there isn't an equation then just let me see if I can solve this.
E= 4.5 billion
The answer would have you with a really big one which could be: