Answer:
Mass of planet B is larger than A by 500 times
Explanation:
Mass of planet A= 8*10^24
Mass of planet B= 4* 10^27
Larger Mass= Mass of planet B
Mass of planet B/Mass of Planet A= 4* 10^27/8*10^24
=1*10^(27-24)/8
=(1*10^3)/2
=1/2*10^3
=1000/2
Therefore by, 500 times.