Question

at the modest rate of one kilometer per year how many centuries would it take for humans originating in afirca to travle to china some 10000 kilometers

Answer 1

(10,000 km)/(1 km/yr) * (1 century)/(100 yr) = (10,000/100) centuries

= 100 centuries

1 × 10² centuries

Step-by-step explanation:

Given data

   Distance traveled (d): 10,000 kilometers

   Rate of travel (r): 1 kilometer per year

The rate of travel is equal to the distance traveled divided by the time elapsed (t).

r = d/t

t = d/r = 10,000 km / (1 km/y) = 10,000 y

1 century is equal to 100 years. 10,000 years are:

10,000 y × (1 c/ 100 y) = 100 c = 1 × 10² c