1 Pour 1 cup (120g) of borax and 1/4 cup (60ml) of lemon juice into the toilet bowl. 2  Let sit overnight. 3  In the morning, scrub with a toilet brush, then flush to rinse. 4  Easy! 5  For tough stains, make a borax and lemon juice paste. 6  Scoop some of the water out of the toilet to expose the stain, then rub the paste into it.
Purchasing power parity (PPP) is a theory which states that exchange rates between currencies are in equilibrium when their purchasing power is the same in each of the two countries.
Top 10 Countries By GDP purchasing power parity. A nation's GDP at purchasing power parity (PPP) exchange rates is the sum value of all goods and services produced in the country valued at prices prevailing in the United States. This is the measure most economists prefer when looking at per-capita ...