Bina Chand bought two kettle for rs 1625.she sold one of them at 20% profit and the other at 20% loss. if the selling price of both kettle are same .find the cost price of each kettle .Also calculate her gain or loss percent in the total transaction.

4, -4 is the other point it would pass through

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.