Practice Ei lesson 4)
The dog parleyed his adorable face and heart-
wrenching whimper into a multi-million dollar
movie contract. if the dog is to be paid
$1,750,000 for each movie and 14,000,000 for
all the movies included in the contract, how
many movies were included in the contract?

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.