The yellow hot air balloon is 50 ft above the ground and is rising at 3 ft/sThe red hot air balloon is 80 ft above the ground and is riding at 2.5 ft/sWhen will the yellow be higher than the red

Its in the national history museum and you can't se the original because its locked away in a vault 

Europe needs to build a trump-like wall that will spread across europe making it impossible for migrants to cross they need to spread pig guts all over this wall so the muslims will never consider crossing into europe..you might be asking "can't they just fly over with planes? " well yes they can so we will install thaad missile protections system to shoot down any aircraft that violates europe's air fourth would be to start a fourth reich in germany.. last but not least.. make europe great again!

Your answer would be 625,000,000.