The cafeteria staff asked 80 students to name their favorite cafeteria food egg rolls- 12
Enchiladas- 20
pasta- 12
Veggi soup-16

Based on this data, what is the probability that the next student asked will name veggi soup as his favorite cafeteria soup

Doesn't make sense try again

Planet earth has a mass of 5.9726x10²⁴ kg.then: 5.9726x10²⁴ kg=100% of the total earth mass.if the water´s mass=5x10-4 % of the total mass, we can solve this problem by the rule of three.5.9726x10²⁴ %*10⁻⁴ %x=(5.9726x10²³ kg)(5*10⁻⁴  %) / 100 %=2.9863x10¹⁹ kganswer:   the mass of the planet´s water would be   2.9863 x 10¹⁹ kg.

Idon't know and i'm a teacher