Question

Soft drinks are commonly sold in aluminum containers. How many such containers are thrown away or recycled each year by consumers ( Assume an average 3 cans per person each week and a population of 320 million. Enter your answer using one of the following formats 1.2e-3 for 0.0012 and 1.20e+2 for 120. )

Answer 1

There are approximately 51 weeks in year. Thus, each person throw away $51\cdot 3 = 153$ cans per year. The population of 320 million uses

$$153\cdot 320\times 10^6 \approx 4.9\times10^{10}$$

cans per year.

Answer. 4.9e+10.