Answer:- A) is the right answer.
is 50 times larger than
Explanation:-
To estimate the number of times
is larger than
Let
is larger than
by n times.
then
![\Rightarrow\ n=(7*10^(10))/(13*10^(8))\\\\\Rightarrow\ n=(7*10^(10-8))/(13).......[by\ law\ of\ exponents\ (a^m)/(a^n)=a^(m-n)]\\\\\Rightarrow\ n=(7*10^2)/(13)\\\\\Rightarrow\ n=(7*100)/(13)\\\\\Rightarrow\ n=(700)/(13)=53.84\approx50](https://img.qammunity.org/2018/formulas/mathematics/high-school/40p9e87h7e753nlbjl5ooj0nl7549es96r.png)
[as 53.84 is near to 50 by rounding off it to the nearest ten it becomes 50]
Thus
is 50 times larger than