Question

10. Sofia read that there are approximately 2 x 104 stars in the Milky Way Galaxy. She also read that there are approximately 3 x 1022 stars in the entire universe How many times the number of stars in the Milky Way Galaxy is the number of stars in the universe? A) 1.5x 102 B) 15x101 C) 6х10 D) 6x102

Answer 1

To solve this problem we have to devide the total number of star in the galaxi by the number of stars in the milky way so:

$n=\frac{3\times10^{22}}{2\times10^{11}}$

and we operate so:

$1.5\times10^{22-11}=1.5\times10^{11}$