Answer:
[tex]4.5 \times 10^{9}[/tex] tons.
300 times.
Step-by-step explanation:
Last year, the world produced 3.5 billion tons of cement and that amount could increase by a billion tons by the year 2050.
So, the net production of cement by the year 2050 will be (3.5 + 1) = 4.5 billion tons i.e. [tex]4.5 \times 10^{9}[/tex] tons. (Answer)
Now, this amount is larger than [tex]1.5 \times 10^{7}[/tex] by [tex]\frac{4.5 \times 10^{9} }{1.5 \times 10^{7}} = 300[/tex] times. (Answer)
