Problema Solution
San Francisco is approximately 10,000 km away from Tokyo. The Japan Trench is gobbling up crust at a rate of 3 cm per year. How many years will it take till San Francisco collides with Tokyo?
Answer provided by our tutors
We need to figure out 1) how many cm are in 100,000 km and then 2) use the 3cm/year as a conversion factor to determine the number of years it will take. We can write this as one equation with multiple conversion factors. We get:
10,000km[100,000 cm/km][1 year/3cm]= 333,333,333.33 years