Question

A typical passenger vehicle emits about 4.7 metric tons of carbon dioxide per year. Assuming there are 253 million cars and trucks in the U.S, estimate the total emitted weight of carbon dioxide in the U.S

Answer 1

To estimate this quantity we can multiply the quantities given in the problem:

$253\cdot4.7=1189.1$

The estime total emmited weight of carbon dioxide in the U.S. is about 1189.1 millions of tons