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.
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