Question

The Himalayas have an uplift rate of about 2 inches per year. Assuming uplift began 40 million years ago, calculate how high the mountains would be in feet (elevation above sea level) today.

Answer 1

So, we know that each year, the height increases by 2 inches. To know the current height of the mountain, we will just multiply the rate by the number of years.

The current height = 2 * 40,000,000 = 80,000,000 inches

Now, we need to convert the inches to feet as follows:
1 inch = 0.08334 ft, therefore:
height of Himalayas = 6667200 ft